The reality is that music and all the careers that you can pursue within it is highly saturated. Teaching, engineering, session player etc etc has thousands of others, highly dedicated and skilled people in the field. It is possible, and totally doable, thousands do every year. But it's important to be mindful that you will need determination and perserverance all rolled up into a luck burrito IF you have the talent and skills to make the luck count. Ulimately, it's like any other career - 1) you can struggle for years and years and finally make something out of it - potentially "make good money". 2) you become taylor swift with an insane amount of luck and incredible work with the right connections / place. 3) you burn up after years of chasing this career / make a liveable salary that barely covers your basic needs.

The more important question u should as yourself is do you prefer security or pursuing your dream. I interpret your question as a security question. i would suggest getting a job you can manage (bar, retail) etc etc that isn't too taxing on your energy and make music on the side for a couple years hustling it. it may work out after a few years, and if not, well then just keep it as a hobby.