Possible to change career at 35yo?

Hello guys I have a question, I’m 35yo and I work as hairstylist since 20 years, I have solid experience yet I’m not satisfied with the market pool in this field, is a toxic environment and is not a stable job career.

So I want to change my career and do something new, after a lot of contemplation I think about becoming an app developer, or learn a job / skills that give me the chance of a solid career, and also possibly work from remote.

Tho I don’t have a school or degree, if I study and take courses and become reliable at it, is it realistic to find a job like that then?

Thanks in advance for the feedbacks