Sith philosophy is very much a Nietzschean construct - while Jedi philosophy is pulling deeply from Buddhist philosophy. The difference being the (over)emphasis of denial of attachment that the Jedi practice overtly (which is not really what Buddhism demands), whereas the Sith over emphasize the *easiest* passions to form their philosophy around - fear, anger, hatred. The natural outcome is precisely the horror-show of the old Sith Empire.
This is one of the things that bugs me about the way that Jedi philosophy is portrayed. I know that they're trying to make it kinda sorta like Eastern religious philosophy, but in Eastern religions (particularly Buddhism and other Dharmic religions) avoiding worldly attachments and such has more to do with trying to transcend desire and identification with the ego because those things create karmic bonds that drag you back into the cycle of reincarnation, when the focus of those religions is the break the cycle of rebirth in order to achieve unification with the infinite/universe/God (essentially the Force in SW parlance) and liberation from Samsara (the world/cycle of rebirth). But the emphasis is not avoiding any and all attachments per se, but trying to transcend desire and things that bind us to the world and keep us locked in the karmic rebirth cycle.
Plus there's also some element of monks IRL (across basically all religions that have them, even Christian) removing themselves from the world in order to dedicate their lives to quiet religious contemplation--BECAUSE THEY'RE FREAKING MONKS!
But in Jedi philosophy they generalize that into some arbitrary need for "no attachments, no emotion, etc." because...reasons, that makes almost no philosophical sense and is very surface level kinda sorta Eastern philosophy, but not quite, because its arbitrary and completely removed from that context. Then it creates all these logical issues with how that philosophy works in the story, and the pitfalls it generates trying to work around those arbitrary strictures Jedi are expected to follow.
Take this with a grain of salt. The difference between Non-attachment in the Jedi-sense vs. the Buddhist sense is distinct in only *one* fashion - the Force is real in Star Wars.
As someone that has been practicing Zen meditation for 35+ years, it's a difficult thing to discuss with those that might not have much experience in contemplative practice (this may or may not include you). But I liken it to the Monkey-Mind that everyone has bouncing around in their heads moment-to-moment. The analogy is by direct experience is you (or anyone reading this) to quiet that mind down. To have no thought, any thought that arises is allowed to evaporate in the moment of awareness. It's a state that has to be practiced and cultivated - and for western minds in particular, its very difficult. The entirety of Buddhist practice centers around the disciplines that reinforce and train this awareness.
If you were to simply attach all the magical abilities of the Jedi to being able to be in that state, (non-dual consciousness where there is no difference between subject/object) that is the exact "flowery" description Yoda gives about "feeling the Force". It's not an emotion - it's a state. If that state has to be maintained, this is akin to Buddhist practice of constant experience of Satori (pardon my vernacular if you use a different one). Non-Buddhists would simply call it a "Flow-state."
Consider how difficult that is. The axis of one's functional resevoir of "connectedness" to the Force is the other issue. There are those that are inherently "strong" in the Force. This, to me, doesn't mean they can hit that Flow-State easier, it means that when the Force is active - whether by non-dual state or extreme emotional passion, the individual's connection might be that much stronger/weaker. You see this with the Skywalker family throughout the movies and other badass Jedi/Sith. (Their midichorian count is high! LOL ugh I velched a little when I said the M-word.)
Conversely the Sith cultivate their connection through their emotional state. Having strong emotional states is a very human instinct. The idea is that the method of the Force utilization begets itself to the lowest common denominator. The difficulty of maintain a non-dual state that the Jedi aspire to is more difficult, but "more powerful" as Yoda says. Whereas the Emotion-fueled Sith method is easy, especially if you cultivate a philosophy and society bent on Fear and Anger as well as other negative emotions that self-reinforce through the Force itself.
So you can see how these things explain themselves even if only using the OT trilogy whose roots were grounded in real-world ideas, but didn't try or need to get too technical about explaining them. That's part of the appeal. To those philosophy nerds like me, it still fits (minus the Midichlorians). The guys at BioWare understood this too when they made KotOR/SWToR because the entirety of their exploration of the Force in the game hinges on the distinctions not just between Jedi and Sith and their connection to the Force, but between the philosophies that define and constrain them.
TL/DR - Grogu is doomed because he's opened the spigot to the Force without learning any self-discipline about not letting his feelings rule him. It's our inherent animal nature that makes that happen - and it will be his too which will fuel his Force use and slide him inevitably to the Dark Side.