It's perfectly fine to withdraw a bit from the angrier politics, news and doomscrolling, even more so if you're noticing that it's actively bringing you down. It's an easy pattern to fall into. Turns out fear, annoyance, distrust and anger are pretty engaging. They are also extremely easy buttons to push for fun, political power, and, above all, profit.
We weren't built to deal with every one of a zillion things wrong with the world every hour of every day. Still, that is what happens when a combination of blind machine learning optimization (for profit, of course), sensationalist greed, and some rando's political opinions decides what you see. In the long history of the human race, borrowing more and fresher worries from all over the world has never been the norm.
I tend to go out of my way to eliminate politics from my life, aside from voting, pretty much. By all means stay informed enough to do what little you can as a random individual, but you can do that without wallowing in every fecal particle of political drama.
They can, it just doesn't work terribly well. Persuading people is not necessarily about actual facts or rationality, even at the best of times, without even involving any strong feelings, or identifying with outcomes, or other interests of conflict.
Facing profit motives, politics, power dynamics, organized propaganda, and bad faith argumentation in general, it's even more grim. Russia and the other troll farmers are making a concerted specific effort out of this. The numbers, resources, and, sadly, human psychology, are on their side.
Making up some bullshit about 5G mRNA causing steel beams takes 10 seconds, maybe add another 5 for calling you a sheep once you rightly ask what the fuck whoever's been smoking. If you wanted to debunk the actual claim, you'd spend orders of magnitude more time and effort than they did, only for them to refuse to even glance at your arguments and studies. Assuming the entire belief isn't fake just to fuck with people, "facts and logic" certainly weren't involved in arriving at it, and are unlikely to budge the actual reason for that belief.