1st Method//

Buying and trading with or keeping players as they raise price when their TOTS league is about to come out then selling them on. This works because there would normally be a tournament for people to play and win certain things. However, you need the certain league squad to play that tournament with so is a very good idea to invest and trade or keep and wait for the max price probably a couple hours after the packs are released for the TOTS league.

2nd Method//

Investing in players an holding them until there TOTS comes out and if there a popular card on fifa then there price of the normal card will raise a bit but sometimes this might not work and you could lose out on money but if it does work you will gain atleast 4k depending on the price of the player. EG// Bellerin (Gold Card) was 5k when his TOTS was released it increased to 10k.

These methods are what i have been using currently for Ps4 ONLY if you want to make money please try these methods but don't comeback and blame me if they don't work for you as you have to buy more popular fifa cards but some could be Hidden Gems.

Hope this has helped people for getting more coins for TOTS ;)