Any recommendation or advice you will get here will only be from a very limited view, from what you shared, and impersonal, as we can’t know many things about you, your personality, and your life and life circumstances.

You say you have a decent job, and you consider focusing on that. Which seems like a good and split idea to me.

You tried more than once to get back into it and finish it, but failed, so that doesn’t seem viable. It’d at least need a break, but if you have the alternative, and good prospects in job etc, then I don’t see why you should have to or would try to force what evidently doesn’t work out at the moment.

Surely you got some things out of your studies already, and job experience counts just as much as studies. You have a job, and surely provide value there, so they depend on you to a degree. It’s not like you’ll be lost.

When it is “okay” to drop out is entirely subjective. As a broad answer to a broad question: it’s always okay. Sometimes people notice it’s not what they were looking for, or doesn’t fit them. Unless there is reasons to follow through, it’s better to cut losses and focus on something more fitting.