There are no means of obtaining compensation from an adversarial state or its companies

If they do business here, they are subject to our laws. TikTok, for example, does have an entity here, so they would be subject to our laws. I don't know about Kaspersky though.

why should US citizens be exposed to this?

Because they choose to. Restricting that is a restriction on US citizens' freedom of association.

Banning Kaspersky, for example, just means that the company cannot officially trade and advertise their products in the US

It goes further than that, it also restricts companies like Google and Apple from including them in their app stores. And for something like Apple, that effectively means users cannot install the app on their device because Apple does not allow other app stores.

I may reconsider if there were no practical limits on what users can do with their devices. Any restrictions should purely be on the companies offering the service, and it should never be illegal for me to use a given piece of software, even if it's on the government's "do not trade" list or whatever. What I do with that software may be illegal, but merely possessing and using it without violating other laws should never be illegal.

I also don't think it should be illegal for any app store to distribute and process payment for a given piece of software, though perhaps it could be illegal to promote it. Otherwise, that's a restriction on the freedom of the app store as well.