Yes, Germans say numbers like that. (It only applies to the tens tho)

Roughly translated you'd say two-and-ninety (without the minus, I just made those so it doesn't look that cursed)

It's mainly because at least in German it flows better than ninety two would. There have been pushes to accept ninety two as well but acceptance has been and continues to be scarce.

some (very few, i think it's only the "teens") english numbers are like that, like seventeen (7+10) for example

Yes, and it's so annoying. I'm Austrian, a bit dyslexic, and sometime I just can't sevenandeighty sixandseventy.

Afaik, they've changed the official system from the "German" to the "Swedish" order after WW2, but it is still used by many in spoken language.