"Do you know any CIMA tutors who are willing to give me feedback on my attempted past year questions?"
Great question, because it shows that you're thinking carefully about how to get best value from your question practice.
I would suggest getting in touch with your nearest CIMA Quality Partner college. You can search CIMA's college finder, by country and city. Tutors at colleges are often quite happy to mark and give feedback. Sometimes they might ask for a fee, but sometimes they do it as a favour, as it's good marketing for their courses. Pick a Quality Partner college, if you can, as they have been accredited by CIMA.