Okay, I have another option too, I recently came across a competition with a volunteer agency, they ask you to to write about your experiences OR ambitions to volunteer, the prize a scholarship ! I know it’s a very “by chance” option, but if all else fails, you could literally enter every one you find?

May I also suggest writing to each agency, explain to them that you have a skill set that is needed, perhaps they will help?

I can also ask around medium, perhaps others may be more knowledgeable than me regarding this?