Can somebody give me a list of ways to make money

You forgot about building executive seats

Not really. Winning helps make the team more money than losing due to ticket sales and sponsor money but thats basically it. Just remember to set friendlies once a week to get that extra money but thats about it.

The whole key to this game financially is building your stadium properly and not buying up too many superstars before you can afford them with your ticket sales.

Pretty simple.