Same experience here.

I’ve learned the basics of 15 different database, coding, web design languages over the course of many different tech jobs … because my job description would just randomly expand into something new within 2 months.

And of course, I had to teach myself all this, with only one exception of an actual competent manager who actually properly trained me.

Nothing is ever documented, or the documentation is wrong.

One job I had as a data analyst for the executive level of a logistics company. The person I was replacing had coded some extremely high level reports wrong and was double counting some categories such that total, global revenue for the company was overestimated by about 30%

I fixed it and explained the fix.

Not a single executive of this world wide logistics company seemed to notice.