Hi Dopa,
I think the most important thing in 2v2 is to help your ally so they don't have to play 2v1.
Here's what I can tell you.
Scouting—scout all the mines, scout where the enemy is, scout if they have 1 Rax or 2 Rax, and check if they have a mill.
Use a rush, because that helps your ally the most.
It doesn’t help if you go for an ogre and your ally has to play 1v2 in the meantime.
To sum it up: don’t die right away, secure your base, go scout, and learn a solid rush—that’s how you’ll be most helpful. I’d be happy to help you with that.
Take care, see you soon