Be a subject teacher. I know you said that you don’t want to teach… but it’s very different from being an English teacher.
I teach a lot of AP courses. I don’t have to stand in front of the class or do any silly things like that. Ok, fine, I do actual teaching for about 20% of the week and I hate it but I can endure it. With time, that number is gradually going down as I get to teaching more advanced courses. The rest of the time, students self-sudy and ask questions. I create and mark exams. It’s a great job and I’m in front of a computer over half of the time.
Get certified in technical fields that are high in demand. Work hard to ensure that your content knowledge is unparalleled and you’ll be set.