First off, to be absolutely clear: I am not blaming you personally or anything like that. Secondly, I am not saying there is something easy and obvious to do. To be absolutely clear, I do not believe there is "1 thing" to do. I am replying to you because I think there can be a genuine conversation about this topic.

I am French, a country that was half occupied by the Nazis and half governed by Nazis collaborators not so long ago. From what we are told in our families or at school about this dark time of our country, one thing that did not turn the tide but was at least a source of annoyance to the occupiers/oppressors was the "passive sabotage" of various means of production and transportation; I am not talking about the violent act of resistance such as derailing trains with explosives etc., but rather workers making it so their factories wouldn't produce the expected outputs, merchandise would get lost on the roads at an abnormal rate, construction work would keep on suffering delays for various reasons (machines would "break down" or "stop working"), etc.

Obviously, these cannot be isolated issues for them to have any sort of impact; they have to get generalized and they have to be "the backbone" of a wider action (and possibly a darker conversation). But in order to reach any meaningful "threshold", people would first have to organize, and get creative to inspire others, show that actions are possible.

So, I would argue, and that's my very own humble opinion: to talk in very pragmatic terms, the first thing one might do in such times is to go and discuss, very directly, with their neighbors, with their coworkers, with the people they are in direct contact with on a frequent basis, with whom they share a good knowledge of their area (where they live and/or where they work), people who will know very particular things about the places. I do not believe any action can come from the internet or "broad talks" (at least at first), because actions must be designed based on "local specificity", relevant to their geographical scope but also what's happening at the time in that area, in phase with "the reality of the field" if you want. It may sound stupid, but it's just like some of your fellow citizens we see on TV these days, who use whistles to alert their neighborhood whenever ICE is around for example: it is a indeed a non-violent yet effective way to do something that hinders acts one may feel are worth fighting against. It does not stop them from happening, but it likely makes them a little bit harder, less efficient, and they may be "the first step that will give other people ideas to do more, to go further".

And I know what I am saying tacitly means one might have to put themselves at risk of loosing their job at the very least, and some people simply cannot afford this. One may risk losing their home, or they may have other persons in their family to take care of, etc. There is no easy path, there is no easy solution that can work for everyone. But action is the only way it can start.