It's finally time to upgrade (10yr PC)

Quick context: I built this PC back in 2016 for the purpose of being able to make music with minimal lag. I had a teen budget at the time and went into debt to get this $1000 PC together. It was a beautiful starter custom that has stood the test of time for going on a decade now (I swear I blinked and it's already been a decade!). Anyways, I've gotten into content creation since then and as it turns out, what I built back in 2016 doesn't hold up to today's standards anymore. I spoke with a friend who is really into computers on possibly upgrading it and he said it's possible. He was gonna send me RAM he wasn't using, but never did. I got some recommendations from Newegg that I'll mention below, but it was their A.I. tool and I feel there is some built-in "upsale" bias in there. So I'm not entirely confident in its choices. So I figured I'd come and just ask for some ideas.