This complain is really just about breloom if you ask me.
Anyway, here are some possible solutions.
1 scouting
2 have any ou grass type (or even vileplume, but at that point venusaur is just better)
3 run offensive balanced teams so the lil shit doesn't get any chance to switch in
4 rock blast and icicle spear can help, rhydon and cloyster don't really like bullet seed
5 don't give a single fuck cause noone runs breloom, and if they do they're rub so the loss doesn't count and you're still the moral winner of the fight.
6 run something that can safely wall breloom as long as it's not put to sleep (slowbro, arcanine, impish metagross dunno).
7 i told you to run venusaur or ludicolo and you opened this crappy thread regardless omfg