what i did was find out kids played dota in high school and started playing with them
i had already done some competitive dota at the time (was terrible compared to now), and then we got to playoffs in open CEVO with my high school team, now we've won over $2000 in prizes from two local tournaments (1 dota and 1 hon)
even if your team isn't completely 100% even in terms of skill, as long as you have people with whom you can have fun and are competent (we have one player who has borderline downs and is trapped 1650-1750 solo playing) you can improve yourself
TL;DR find some kids around your skill who you can have fun with and play with them (no elitist buttfuck, guy who says "lol im not even trying stfu", etc)