Have you read any books or done any trainings on workplace organising? Most unions provide free training for members who want to organise. I’d leave a book rec too but the main books I’ve read on the matter are by IRL comrades and I don’t really want to dox myself on here.

It’s about having the right strategy and knowing how to have these conversations with coworkers. Most people trying to organise a workplace come up against the same barriers. The biggest piece of advice I’d give is focus on active listening—what problems does this person have and care about in their workplace? Don’t impose your own problems/the issues you care about most onto them—what’s important to them may be different to what’s important to you. Find out what they care about, and get them thinking about what might happen if we used our collective power to do something about it. But organising strategy can’t be summed up in a Lemmy comment. I do suggest you look into doing a course/workshop/reading a book. You mentioned being in Europe; I think the Rosa Luxemburg Stiftung ran online organising workshops for Europeans iirc, not sure if they still do.