Which one do you recommend me? Because I just use primal XD

I actually disagree with this. Ok, maybe you *can* make most apps (I wouldn't say almost any) use Nostr, but you probably shouldn't. Not everything, not even everything that is good, is the best tool for everything. Nostr is good, but far from perfect, and it's often, but not always, a good tools to use, along with others.