Have you tried Rival 700? It's very smooth and I know several top PUBG players who use it, so the weight doesn't really matter.
Your hand must be really weird when you say the M65 is terrible, I haven't had any problems with it in PUBG / CSGO.
As you see, everyone has their own preferences, so our opinions don't really matter at all.
It's up to OP to find a mouse that suits him/her.