Add Swedish as a supported language for translations in Firefox.
spraakbanken.gu.se (language bank from Gothenburg University) seems to have a lot of available datasets to use. The majority of the licenses (from my quick look) seem to be "CC BY 4.0 attribution".
There are also other links I've found after a quick search for "swedish language datasets", which could potentially have something of interest, but you'll have to dig into it yourself because I have no idea where to begin.
https://www.ai.se/en/node/81535/swedish-language-data-lab
https://github.com/seanpm2001/AI2001_Category-Linguistics-SC-Swedish