It's easy to play without buying tokens. The only thing I am doing to grab some more, is playing Matomy and TokenAds videos, which give me about 2 to 4 tokens per day at max. A tip for upgrading the best team in your competition is to do a lot of work in the transfer market, where I built a 4 star team in about a week and a half. Since then I got 10W 2D 0L. At the beginning of the season when I didn't start my transfer, I had a sheet of 4W 4D 2L. Now I have the best team in all competitions I am engaged (League + C1). I am not adding in this post all the work on the tactics done, looking the opponent's team, history, and even looking at his opponents tactics when they faced him to partly know what was working or not.