What is your game engine? I use Gdevelop5 and it is completely NO CODE, it is all from scratch. Using Mobile controls on it is very easy and accurate. Recommend you take a look and install it. By the way, Good luck!
Bro I have the same problem. But I use Gdevelop 5 engine and I'm studying about Multiplayer Online using P2P or THMK extension. If you use GDevelop5, I recommend you to see TheGemDev Multiplayer Online tutorial. If you use other engine, just don't give up!