Let's replace the word "crypto loan" into "cash". No difference at all.

"Is it possible to receive a donation or a cash loan without collateral online? And how is this best done?"

And obviously, you already know what will be the response to you. You can always start again from being nothing even without taking a loan. Take that as a challenge.

You can even afford to go online, does have a gadget, pay for internet, etc. Currently, also have a companion. There are more people who are way more struggling compare to you but working hard to gain success and not asking for donations.