Yes, the First Amendment applies to all people within the territory of the United States equally. US law does not limit the political speech of non-citizens present on visas.
Are you opposing the divestment law? If so, and you think TikTok is a real security threat, what is the alternative measure?
I don't agree that this is security theater. Divestment will put the entity which controls TikTok under the jurisdiction of U.S. law, and no, it isn't obvious that the company would still legally be able to export data to the CCP. I also don't understand arguing against a measure on the basis that it won't work well enough - you have to argue that the measure itself is bad.
Yes, and Americans will continue to have access to propaganda of foreign adversaries after this bill passes. The ownership restrictions on broadcast media that OP mentions don't stop Americans from going to the Chinese state news agencies website (https://english.news.cn/). These measures limit the ability of foreign corporations to control American news distribution platforms, not the ability of Americans who want to read Chinese propaganda to do so.
ByteDance is a Chinese corporation. The US federal government does not govern it and has no responsibility to allow a Chinese corporation to express itself in the US by publishing propaganda.
Here is a study which compares the prevalence of topics on Instagram with the prevalence of topics on TikTok, and shows that topics which are sensitive to the CCP (Tibet, Hong Kong) occur 5-10x less frequently than comparable topics which are not sensitive to the CCP
+1 to SSRIs. One thing that's under-emphasized is that trying SSRIs is an experiment, rather than a commitment. After 5-6 weeks if they don't work for you or the side effects aren't worth it, you can drop them no problem. So if you feel like you might have clinically significant anxiety or depression, really consider an experiment.
I've had friends that have hated the side effects or not seen much benefit, who stopped. And I've had friends who've start and it's like a cloud has lifted - described as the best decision of their life.