Your job is to produce surplus value for your employer in exchange for reduced risk and possibly to specialize into work you find interesting. (Machine Learning doesn't happen without division of labor.)

You do not owe your employer your sanity or anything above and beyond what's reasonable. (As decided by your personal satisfaction and the standards/mores of your culture.)

If you're seeking to put more into the pot so you can extract more later, save money and stash it in a mutual fund or start hustling for yourself. Employers are perfectly happy to ignore you for decades on end, if they even keep you around that long.

Don't pretend value will present itself to you just because you're putting in the hours. Like thinking you'll get a date just because you're a good person.

Edit:

Don't let employers/management guilt you into working more hours than they deserve from you.