Tic-Tac-Toe Feedback

Code Feedback
1

Hi there, I will appreciate some feedback about my ticTacToe game, in particular on style.
Thank you!
Here my project:

2

I found a bug, if I choose 8-6-1-2-5. I don’t know why.

3

I found the solution. I still have problem with fluidity at start. Does someone have ideas about it?