I've opened my bank account to allow such case for that:
simply go to your bank app (bank muscat in my case, I think also works for other banks?)
input my phone number (96751296)
input the amount you want
donate
What you donate is purely out of your will. This is a completely optional
I do not owe you anything for the money apart from what I already provide and may provide in the future (cards, notion notes, etc)