Q: 10% rebate upon losses & 0.25% rakeback

I was given a sports betting account and a live online casino with a 0.25% rake back for any amount i bet. what i had extra was in the event i lose, they give me 10% rebate of my losses on a weekly basis.

Example: i made a loss of 5000 this week. so after i minus $500(10% rebate) and $X (0.25% rakeback). my losses are less than 4.5k.

So what i did was i created 2 accounts and i bet on 2 separate soccer matches or casino games.
Example: A match of Arsenal vs Chelsea (handicap +0.5)
Account A i bet 1000 on arsenal odds 0.97
Account B i bet 1000 on chelsea odds 1.00

If chelsea wins i win 1000 +0.25%*1000, Arsenal loses 1000 -10%*1000 - 0.25%*1000

If Arsenal wins i win 1000*0.97 +0.25%*1000, Arsenal loses 1000 -10%*1000 - 0.25%*1000

It is a sure win provided i'm just playing 1 game a week.

What if i want to play multiple games on sports betting or casino games? Any solution out there?