Often you will save yourself lots of time in life if you help people give you adverse information.
For example, when you work with recruiters or hiring managers and they call you to tell you the feedback/next steps if you feel it didn’t go well then be honest. You aren’t made for every job, and there are plenty of cultures you don’t want to be a part of. Trust me on this.
So when you think that the company isn’t a good fit you can say “I’ll save you some time. They don’t think I am a good fit and thank you for your time.” It always shocks the person. Listen we are all adults here. We are not a silver bullet and even if we have the intellectual or emotional capacity to work someplace, it doesn’t mean that we should.
When I have done this they have appreciated it. It is difficult to give strangers feedback and when people negatively react to feedback then people do it less. People need feedback even if it is not reasonable or true. The fact that they are trying to help is nice, even if their psychological skills are limited. Encouraging people to give feedback is pro-social.
We need to be discriminating of where we work and what we spend our time doing. We have to enjoy and be thrilled with our day so that we can approach it each day with the best of energy and intention. Being honest with your side only helps yourself.