minecraft 1.17 for bedrock glitch

So i have been playing Minecraft bedrock for a while now and i created a new world like 5 minutes ago and I cant find any caves just water caves even if i go on experimental mode for 1.18 no caves and if there are they are under water caves or in mountains please fix this but it could just be world gen for my current world its very weird and also you cant jump in powder snow and when you crouch you still fall through it