Yes, better move this to appropriate section, or maybe make it a service? If you really are good at poker and can turn a profit in the long run then you could offer it as a service.
Still, the backing you seek is quite small (and so are prize pools) so i doubt people will be interested in backing this. Especially considering they have to trust you entirely to hold your end of the deal.
Maybe also share all the details?
What site you playing on?
what is your nick ?
any stats/previous results you can share and verify?
You seek funding in BTC, but i assume poker tourneys are USD buy-in and USD prizes so you would buy BTC for the tourney profit (if any) and send that or how exactly?
If you find an e-scrow that will hold the backers BTC till you either verify that you finished out of the bubble or you send the share of profits to backer. I realize that then you have to fund the buy-in yourself anyways, but if the issue is that you can't find ~50 bucks then i imagine there are other reasons someone should be vigilant about using e-scrow.
Lastly, i wanna suggest you try sites like
https://youstake.com/ (Not sure if you are eligible for that particular one, but their are others more "loose" sites of the sort.