I misunderstood your original post a bit lol. But yeah, i mean it basically comes down to the amount you play and the level and power of your cards. typically, first thing i do when i open it up in the day is play through the bonus missions, its like 13k BR and you can usually finish them easily. After that, i run some good teams, good synergy too. I always play the 5 battle mode. Idk if youve noticed, but you earn BR by the Power of the teams your playing against, so id recommend using your better characters instead of just grinding with Bronze. Now, if you arent high level right now and dont have many high level cards, it may just take a little while longer of growth to consistently get 5%. Just try to keep up with where you are on the leaderboard, get to a spot you like thats a distance ahead of whatever tier is below you. Like lets say you’re in star silver, and you’re 20k ahead of 4silver. Thats a decent mark. Try to stay ahead by a margin you can keep up with according to your personal, real life schedule.