Next steps?

Hello Guys,

I recently came back from a long Pause and reached Diamond in 2v2 kinda fast.

In 1v1 i am Plat 2-3 currently.

I never rlly practiced any specific movement or shots and when i run into a smurf I get crushed hard. So im wondering if it is essencial to use a Controller to get better or if it is possible with the touch screen?

Also what should i practice? Do i have to learn all the movement and how? Are there any (really) good Tutorial Videos?

What did you guys do to get better?

Thx in advance!