Good on you and props to your parents :)

I just wanted to chime in that “nazi” isn’t technically a swear.

Sure, calling someone one when they aren’t (some willingly people wear the name with pride) can be hurtful, but in the context you’ve used it I’d say it’s OK.

Just my opinion though

I agree with that sentiment but how does replacing a particular swear word with “frick” somehow make it better?

Unless you’re specifically directing it toward someone who’s sensitive to it, swearing generally doesn’t harm anyone or make them sad. Whether it’s a good, or bad thing, that swearing has been normalised, the fact is that it has been, at least on the internet.