Should I quit my job and go home to study?

My heart goes out to you. But why don't you take the other half? Maybe you can bear your hardships better. Of course it depends on fate, but you should also put it on the agenda.

As a translator like you, general administrative work (except foreign-related administration) is really "overqualified", and it is also a waste to go back and forth for three hours every day. If the monthly salary does not exceed 20% of the local average wage, there is really no need to do it. If you are not picky, it should not be difficult to find a new job.