how to see my accuracy? I didn't find it anywhere
To see accuracy, click the blue button that says, "request a computer analysis." After a few seconds of loading, your accuracy will be displayed to you in the form of "average centipawn loss" and give the number of inaccuracies, mistakes, and blunders you made. The lower the average centipawn loss, the more accurately you played.
You can also check your full analytics by time control with the option "chess insights". Find the option under your profile (visible on computer, not phone browser)