Best site for working from home?

So it looks like the third wave is here to stay for a bit and my bills are piling up. I am thinking of getting an online job to earn some extra money in my spare time, and maybe even transition to working completely from home. I have been looking at some of the apps and sites out there, but it is all so complicated. I just don't know if its right to pay to sign-up, accept such high percentages that they take, and rely on this as a sustainable source of income. . .Basically I have about a million questions and my research only opens up more. So I thought I would hear from some folks with more experience in this area.
I have listed a few sites I am looking into, which do you think is the best one to work for?

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