Getting what’s convenient (and legal) for yourself is the way to go. There are no silver bullets available anyhow. You still need a multi-layered strategy. There’s no a la carte option if you want to, or need to, avoid covid.
I have heard that people are contemplating or suggesting switching to pet covid tests just to get their preferred brand because they have loyalty to a brand that’s been, I’ve noticed, cultivated with creating a community around it, high pressure sales tactics, and over rosy promises. This is not reasonable and people should get advice from medical professionals and certainly not randos on social media. Get human covid tests if you’re testing humans, and get pet tests for pets.
If you care about infectious disease mitigations, you can call or write to your representatives in government if you don’t think there are enough options. The politicians you vote for, who consider you a constituent may actually listen if they hear from people in their districts / states. Just make sure you’re spending your time doing advocacy that matters for your life and makes sense in these troubled times, and you aren’t just being duped into wasting your precious time doing lobbying for some foreign entities who just see rousing Americans to act rashly as a cheaper option than buying Trump crypto.
I have also heard that people think they can bring contraband products into the US, or personally ship contraband products to Americans and make some money at distributing it or make it some kind of a “swap” of in kind goods. The FDA has rules for “personal importation” also, meaning “a product not for further sale or distribution into U.S. commerce.” Or distribution into US commerce. And those rules have their own set of criteria as well: https://www.fda.gov/industry/import-basics/personal-importation
If you want to know what the government is requiring, consult the government official documentation, don’t rely on people in zoom meetups and social media group chats. Call the office of your representatives. Politicians employ staff to help people navigate government policies. If you’re planning on doing commerce or doing something as a business though, you might be best consulting a lawyer in that case.