Can we be real for a minute?
The kind of companies involved in android may have started in the US, but they're international.
Buy a Samsung, it isn't like it only puts taxes into one country's coffers. Same with Google, which is headquartered in the US, but their phones aren't actually made here. So you skip pixel devices, and feel all good about it, but if you actually get enough people boycotting them, it isn't the us that takes the hit. It won't even hit the pockets of the shareholders.
Who would take the hit is the people at the bottom, making the hardware, and that's going to be whatever country has people willing/forced to work for bare minimum.
Some things, yeah, you can completely boycott and only US companies take the hit, which still isn't really going to hit a big enough company because most of them are an international conglomerate's property anyway. It might fuck over something like Arizona Iced Tea since that's still a family owned company. But anything that's publicly traded? Nah, it's theater unless you boycott everything that conglomerate owns, and it ain't like any of the nestle botcotts have hurt their bottom line in the decade or so it's been going.
Phones though? There's nothing you can buy that isn't going to enrich Google in one way or another, at least indirectly. You can get close. Pine phones, fairphone, stuff like that where you have the ability to cut them out. But even going with a pixel and cutting google out from out still has feedback effect into Google's influence via the secondary market keeping their brand with higher values, making their hardware look better than it is.
I get it, the shit is stirring, and you want to slap back.
But the only real way to slap back for real is to abandon smart phones. Some of those, android free, you can cut things down and maybe avoid sending funds into us coffers. LG dumb phones still exist on the secondary market, and they were decent. So I don't doubt there's other brands out there making phones that are decoupled enough that it might only be pennies instead of dollars.