Feedback on a fantasy footbal (soccer) game

Hello all, I am making (far from finished) an atypical fantasy football game, I am looking for some feedback.
if someone want to help in any way it would be greatly appreciated, the code is here, I am not a native English speaker so if you can report some errors would be great, but really any kind of help or suggestion is very very welcomed.
I didn’t have the opportunity to test it on Safari so let me know if there is some problem, well in reality I only test it on chrome an Firefox for Linux and android so…

if you like it leave a star on Github, it would be great!