I don’t know how deep the well has to be, but if you search Youtube for drill a water well yourself, there are a number of them. They are labor intensive and not for everybody, but interesting to watch. Now if I was thirty something...maybe.
We have a local well drilling outfit that drilled our well almost 40 years ago. We had to replace the pump a few years back, and the son had taken over the business. His father retired.
He was a likeable sort, and did a good job for us, so we would probably call him if we ever have to drill a new one.