Is it possible to play this game without spending much?

[leksein]

I just started to play this game a month ago and I really enjoy it so far. My team is ~80% and as your players lose 20% for every league promotion, I wonder if I’ll be able to catch up with other players in the game myloweslife. I started off playing this game for fun but at this point, I’m kinda into it so I’m thinking about spending some money to improve my team.