Is there any tips on both double hits, i can regularly hit the right side double but the left one is hell. Any tips on positioning or anything

it's really hard to get both double hits with keyboard and mouse, and slighty hard on controller.

Crawduck, there is a way to do an easier version of left side, but its 1 second slower than normal left side

You want to aim right under robo sponge's left eye. There's a video of it in the discord server linked on the left side of this web page.