My usual mode of collaboration with others is like this. If the profit you expect from me in a game is assumed to be 5000U, then I will pay you 5000U. If lose the game, you will compensate me with 5000(i paid you before)+5000 * 1.3=11500U, and all transactions will be made using escrow to keep ensure the fund security of both parties
No matter what you say, the public will not accept you. The public always likes to be risk-free and will never want to take risks. I do not believe in all the offers you are saying here because fixing matches is already illegal and the public does not like it at all. We never wait to win a lot of money, we always participate in gambling with a small amount of money. Even if we participate in gambling with a small amount of money, we accept entertainment there and we participate in gambling mainly for entertainment, so we do not want to fall into the trap of any fraud there. Moreover, you are a newcomer here, there is no question of trusting you. In our experience, we will move forward with as much as we can.
I think you are getting it wrong. Getting fixed matches is not that the the team that is involved decided to allow their opponent to win the bet because they are paid for it. Making prediction sites and communities do use the word fixed matches because they believe many gamblers would want to subscribe to their channels because they will think that they will win many of the prediction matches.
I have bet on many fixed matches and I won some and lost many of the bets. Nothing like fixed matches when it comes to predictions.