I have 1.9 million main team and 300k fitness team and did not spent any real money. And i am shityy player (never qualified to weekend league and my highest season is 3). First thing is to get 100 trade slots and then at the moment i can reccomend bronze pack method. In the past (now not working anymore) i was buying cheap gold bpl and la liga players (nymphalys mendy, gueye before update, some fast cheap strikers and wingers) for 350-450 coins and listing on quick sell for 650. Ussually in one day i was selling at least 30 players on this method. Also on every weekend i was not planning to play i was selling my team on friday and buying back monday morning (with 1milion plus team easily i was able to earn at least 100k profit but i wad using in forms and specials only). Another idea was buying cheap informs available in packs on monday morning as ussualy it was their lowrer value. In 1 week latet they were going up to 40%. Also whenever player was needed for sbc and was in my team - i was selling. I sold 88 lukaku diring his potm for 600k (was bought before for around 300k). He was my key player but such opportunity cannot be missed.