In reply to Jaana.

The symptom you describe usually requires some specialized typewriter repair tools to remedy, so I'd recommend taking it into a repair shop where it's probably a quick fix: https://site.xavier.edu/polt/typewriters/tw-repair.html

Phoenix Typewriter on YouTube has some videos on type alignment, but the custom tooling to repair them usually puts them beyond hobbyist repair means. The cost of the tools are probably more than a repair person.