Oh, and start frequenting music circles if you haven't already, music dedicated sites like bandcamp or SoundCloud, maybe even music-centered forums. Newgrounds has a music dedicated section afair but is hardly teeming with activity.
Avoid tw*tter like the plague, just avoid social media outrage culture trash in general whether it's right or left flavoured, it's all brain poison.
Remember that the point of frequenting musical circles is to cultivate your love for the craft with other likeminded individuals, and not really to form connections of the affectionate type, take it from me, I've frequented art sites also to make "friends" at one point, but it never worked out for one simple reason: people don't frequent those places to make friends but to share their passion, see some nice art. Sure you might get some friendly exchanges but I'd hardly call those "friendships". The internet in general is not a good substitute for irl friendships. Wish I could tell you more about the "connections to other people" part you mentioned, but I gave up on that myself haha, in all honesty I prefer being alone. Call it cope, but it's something you have to ask yourself: am I alone because I'm unable to connect with others or is it because, deep down, I LIKE being alone and I'm just being told there's something wrong with that? For me it's the latter, having friends it's often a chore distracting me from my interests