Are you working 80+ hours a week or something? If you have zero free time outside of work, I guess there’s no room in your life to find any kind of meaning or purpose outside your job. Then you’re left trying to find meaning in a shit job.
Trying to find a job that is “meaningful” that also pays the bills are few and far between. Most meaningful things in life don’t pay well or at all, or have very few job openings, or are extremely unstable (self employment or startups). Otherwise you’re left with your life “purpose” in a corporation, which only means “make more money”, which is pretty shallow at best.
Work-life balance is important, and I think keeping work and life separate is a huge part of that. Forcibly mixing the two only causes more stress, either from one adding to the other, or from severely limiting your job prospects overall. Making your job = life severely limits both.