How do I dive when the enemy team has actual predators as supports

For last two weeks or so supports have been so aware, they keep a lookout 24/7 and they just melt me the second I even think about diving, and why has peeling been such a big thing recently? Like, just let me kill your supports man. Another thing, has anyone elses lobbies been filled with absolute loser spider-men that make it their life mission to diff you? It's so annoying