New(ish) Runner - Advice to get beyond 4 miles

Good morning runners! First post here.

I, 34M, have always been interested in running, and have ran on and off since childhood. Since my recovery/sobriety (8 months) I have dove DEEP and fell in love with running. Escaping myself, getting lost in the music, while bettering my mental and physical health has me feeling incredible.

For structure and goal setting purposes, I have been running a ton of 5ks. The longest I've run thus far is 75 minutes (about 5.5 miles). I run to feel good, not to PR or improve time. If I improve time (naturally I'm sure I will), then great!

I cannot consistently get myself beyond that 5K though, although I know I have the ability to do so.

What recommendations to you guys have? TIA!