You could find students. They are willing to work for some money and can learn.
My partner who helps me a few days a week is very good. He is the not the fastest, but he is really good at making nice straight lines and trimming too. He also knows about grass a bit and he likes the work. I am happy with that.
When he had to go back to school, I needed someone else to help me out for another month. I was desperate and asked the step brother if he could help me. I put him on the mower thinking he could be good at it, because trimming is a little harder (don't want to scalp the lawn). He was not good on the mower, because he never really used one. So, I put him on the trimmer and I had never, in my whole life, seen someone trim like that! He was incredible and I forgot that he lived on a 4 acre lot with 2 acres of grass and trees. He would help his dad trim around the trees. I parked him on that trimmer all night every week and my trimmer had one hell of a workout! So, you can find people that can learn to cut. Learning is something anyone can do in life. It just takes a little time.