I have a tennis automation. Profit margin awful but seems to work every time. Needs improving especially when your backing & laying £100 just to win £1.00

Please don't laugh i'm trying so hard.
The tennis player needs to be winning by 1 set and 2 games this is why the odds are so small hence profit margin.
If someone can improve this attached file below, that would be a benefit to everyone if it works. Optimistic but who knows!
Many Thanks.
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