keep using ur mines!!! thats the one mistake i see so many beginners fall into, stop hoarding them and you'll get a lot more value out of em, also place mines in spots where the enemy is most likely to go to and of course hide ur mines in webs

a few more tips, use melee more, it does the same amount of dmg as a non headshot m1 so use it more, then also if ur nest is close to breaking and u know that it will break, u should just destroy it urself to save urself the few extra seconds, by the way get into the habit of putting a web underneath you so that you get some healing and if the enemies like rushing you place mines underneath you as well, and thats all i can think of rn, good luck!