How to improve as a solo player?

Hello reddit. I need advice on how to improve in the game. I gave around 750 hours in csgo and im Nova 1, thought my first 300 hours was mainly surfing and bhopping. I used to play with a group of friends and we went from silver 2 - gold nova in about 2 months and everything seemed swell. However most of my friends barely play cs anymore and I still want to grind and be the best i can possibly be. I started solo queuing in FACEIT and for a while i was seeing improvement in my awareness and aim. The last few days have been rough, however. Ive been bottom fragging and my brain has seemed to turn off during play. I really want to get out of nova by the end of the year. I know it isn't much but CSGO is my first shooter I've ever taken seriously and and setting minor goals so I don't disappoint myself. I've been trying out retake servers and I get destroyed but that's fine because im playing vs extremely good players in my eyes. However when it comes to actual 5v5 competitive im in a rut and am just looking for advice on how I can overcome this and eventually reach my goal of climbing the ladder. I think i got too comfortable playing with my friends that I started to synergize with, so now when I go to solo queue im lost.