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How old are you, OP? It shouldn't be that hindrance to you that much.
13 and above is allowed to sell in Fiverr according to there ToS. Not sure what KYC are you talking about, but if you meant by using Paypal, you could borrow your parent's account to receive payment there as that's where minimum age of 18 and above is required.
Upwork also only allows 18 and above.
Try to offer your service in here instead, just make sure to showcase your works. Theymos won't implement KYC anyways, or maybe....
I'll get right on that, just as soon as hell freezes over.
Sources:
Fiverr ToSUpwork ToS