It seems that Librewolf is not available in the official repositories for Linux Mint. You may have installed it from a third-party repository or manually, which may be the cause of the issue.
And it is not.
If I am correct, @SpongebobFan1994 has installed it from the Software Manager on Mint, not through the Package Manager.
There, it is available through Flathub as a flatpack.
That changes the rules of play for what advice @TuxBot can provide, along the lines of GIGO (no offence, David).