What is the best cold hardware wallet?

I’m a total noob with this kind of stuff, but Ive stored crypto for a bit now, because of influence from friends which led me to believe in it

All I do is buy on cashapp after a paycheck, or randomly because “why not”. Don’t really think about it…and I’ve done this for a while now, so think it’s it’s appropriate to store this elsewhere.

I’ve heard how we technically don’t own our bitcoin when we store it in cashapp, so I’ve been overthinking it a bit.

Any help y’all