why do some people assume that non believers "follow satan"? that is just bullshit, non believers do not follow anything except logic, evidence and reason

They follow the Jesus who is going to send everyone who does not believe in him to hell.

I followed Jesus last week when I saw him driving next to me, and I asked him if he still owned that restaurant that made great tacos and if he will reopen soon. Unfortunately he told me that he had to close it because of the pandemic. I hope he can reopen some day, he made great food, I didn't pray to him though.

We're all human, there's nothing much separating us other than opinions and wishful thinking.
Some dream of surrounding themselves with people that only think like themselves while others are willing to enjoy the full range of intellectual exploration.
Then there's the people that will hang on to bad ideas until they're dead evidence be damned.
For myself I find it helpful to keep mostly to myself.
I was raised as a fundamentalist in rural Alabama, and I will never be able to trust groups of people for that reason, groups of people in my experience are unreasonable.
If you were a transgender progressive liberal from Trump country (when I was a kid it was Wallace) you would have trust issues too.

Just treat people how you want to be treated.

I suppose following Jesus or satan are the same thing, reliance on the belief of imaginary entities...

That seems to be an equitable assessment.

In my experience, religion taught me nothing about ethics. They only provided rules that I was supposed to follow in order to remain in their church. It was only after discovering that the church was a scam that I did my research and discovered how to live a truly ethical life. So, I'd say that atheists are not equal to religionists. We are much better when it comes to ethical behavior. At least that is my own personal experience.