I am looking for a weight loss plan to follow can you help in any way? I have done some research but there is so many out there!

I can’t go outside a lot, so I do pilates. I want to know more workout for weight loss.
By the way, is pilates for girls only?
I mean like give me instructions for an excercise. You know, like…
Step 1: Do this.
Step 2:Dp that.
Also, tell me how many I should do, like 20 sit-ups or 100 jumping [...]

I am starting a weight loss competition between friends and need to know the best way to decide the winner since all of us have a different amount of weight we wish to lose.