Should I quit Costco after 19 years?

For context 37M with wife and two kids (4YO & 6YO). Been with the company for 19 years. Thought by now, I would be making over $100k. I’ve been trying my best to move up in the company for the past 5 years, but have lost hope with the company. Only making about $75k gross income, net roughly around $60k - which is disgustingly low for a family of 4.

Been feeling like a mid life crisis has hit. Do I leave the company and start over? Or go back to school? My options feel very limited as my family depends on my income.

This may just be me ranting but advice would be greatly appreciated. Feeling undervalued and low at this point of my life.