I'm surprised no one has recommended "2FAS" yet. It's the open-source alternative. The app is primarily designed for mobile, but they also offer a browser extension that you could install on Linux if you wanted to. Personally, I always try to keep my 2FA apps unsynchronized with a desktop PC.
Oh, and you can export your secrets at any time. Not like Authy.
I understand what you're saying, and I do see where you're coming from. I'm a foreigner who lived in the country for a while, and I'm passionate about following both US and global political news. I can assure you that on the larger spectrum, they are more alike than they are different.
I'm not just talking about international politics where a president is essentially an actor repeating concepts they may not fully understand, but also in terms of domestic affairs. The debates they have in the United States may seem profound (healthcare, abortion, student debt), but they often appear to be comfortable discussions. In other words, the primary interest of their politicians is to retain their jobs, and they would never seek to improve the lives of their citizens if it goes against the possibility of maintaining their influence. Ultimately, both parties serve a higher good: preserving the two-party system. They may pass the baton back and forth from time to time, but the game remains the same.