There are a lot of generous people in crypto space, and receiving a donation is actually possible.
However, it is not possible to get a loan without collateral as you said. If I were the lender, I won't lend to some stranger even he is popular or known in some field. I know it's the same to you.
Also, you have discussed that OP is already a lot of debts but still looking for loans, I think it is the hard part when having a loan, it is hard to pay due to own expense, if your earnings is not enough for your daily expense, loan is the only choice for most of an individual.
During those times that the Bitcoin or crypto world has just begun, there's a lot of people especially in gambling giving tips on it, a lot of gambling projects giving a starting capital, which for other people are taking advantage at. But nowadays, those giving donation is very few.
Those past years, giving free giveaways in twitter to make them active, having a bounty campaign, this was the event that they made up instead of just donating it online.