What kind of tips for soccer?
Performance improvement? If yes which aspect of performance? Tactical, athleticism, technical, mental?
Betting tips I would guess, needs a lot of team analysis, check the latest form /injuries of key players or of the team as a whole, tactical knowledge and checking news to see if any side is adjusting anything for the upcoming match to gain an edge.
To give valuable betting tips requires a lot of knowledge around the game and research imho. If you have the sources, try to make good ROI bets and build a capital from there and then make a paid membership forum/website