Apple music keeps asking me to login even though I'm already logged in and it won't accept my apple ID password

I just bought a brand new mac, it's completely up to date with everything. my os is Venture 13.2. I wanted to sync my music library to my old iphone 7. I managed to login on Apple music on both devices using my apple ID. Then I tried figuring out how to sync my libraries, and the "sync libraries" option isn't on my mac or on my phone, so this isn't an option. I authorized my mac on apple music. It again asked for my apple ID and said my password was wrong, so I changed it to the exact same password that I thought that I had just used to login on my phone. It worked. Then I try to look at my account on my mac. It again, asks me to login, says my password THAT I JUST CHANGED AND USED TO LOG INTO APLLE SUPPORT RIGHT NOW is incorrect. I tried changing the password trick again, but I really don't want to change my password right now (it's brand new and I struggle remembering the new ones and just memorized this one ffs). I tried just changing the password to my current password and again, apple music said I can't use a password that I've used in the past year. WTH.

Please, I just spent way too much money on this computer just to have it bug out a week after I start using it. Makes me think I should've changed to Windows.

*edit* I just logged out to see if I could sign in again and maybe fix the problem this way. Nope! Now I'm just permanently locked out of my account.