I finally made it to silver 1, shold i continue playing or just stop so i can be silver at the end of the act? is there a reward or something

I dont get how, we just hit round 12 then start losing all the following rounds. Like attacker half up 7-5 then defender half 12-7 then lose 5 straight in a row. I really do not fucking get how 2-3 guys on the attacker half end up becoming...