There is no one definitive answer to this question. Different players will have different methods that work for them, so it really depends on what you're comfortable with and what works best for you. However, here are a few general tips that may help you get more money in FIFA 22 Mobile:
1. Play the game often and regularly. The more you play, the more opportunities you'll have to earn coins through match winnings, achievements, and other in-game rewards.
2. Be smart about your spending. Don't waste your coins on unnecessary things like luxury items or player packs that offer little value. Instead, invest in things that will help improve your team's overall performance, such as training sessions or quality players.
3. Take advantage of special events and promotions. From time to time, FIFA Mobile will offer special events that can net you a nice chunk of change if you participate and do well. Keep an eye out for these events and make sure to take advantage of them when they come around!