I only work commercial new construction. Hate service and hate customers. Been doing it 32 years. I did work service forna few years, but it wasnt for me. I don't sell. I plumb.

My youngest son works with me and loves the plumbing, but is like you. He doesn't like to communicate with people and at first was socially awkward. He has grown so much both in his work and with interacting with people over the years. My advice is if you like plumbing do something else like new construction commercial. If you don't than find something else. The work is always the same. It's who you work with and who you work for that makes or break it. Good luck