Now that's an attitude that will take you places!
There are a lot of instructors who will do a work for lesson trade. You may have to save up for a couple lessons to get your foot in the door & prove your work ethic.
I have a student who I do that for. She's worked her tail off trying to make herself invaluable and spends much more time than I require of her in my barn, a lot of it observing. She initially just wanted to better herself for her own horse but has now caught the training bug and plans to attend Blackhawk or Findlay in a few years and pursue it as a career path. I plan to tell her when she goes off to school, she has a barn to work out of when she graduates.
If you work hard and don't give up, you just never know what will happen!
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.