I’m 0-10 (getting booted and kicked offline)

I started my champs yesterday night played 3 and my last game just kicked me out right at the last point when you are supposed to collect coins and then came back for it to say I’m now 0-3 instead of 1-2 today I played about 7-6 more games and won about 5 however I’m still yet to have won a game due to lagging out at the final part (after the whistle is blows and when you collect your coins) how can I fix this problem I have 4 games left of champs and would at least like to get 2 wins 😭😭😭