HOW DO YOU MAKE A NAVIGATION BAR LOOK GOOD?????????????????

so i was looking at w3schools and while it is very helpful i changed my navigation bar from a table element to a list so i can edit them through css

BUT NOT I FEEL LIKEI FUCKED IT UPPPPPPPPPPPPP DXXXXX

PLEASE I NEED HELP!!!!!!111!!!1!!!!!

here's the site for example

finleyishere.nekoweb.org