I don’t know you from Adam so all this is purely hypothetical musing.
When a grown man says lots of people in his work and social set are bullying him and oppressing him it’s generally (to me) a red light that his social filters are way out of whack or they are somehow inviting a negative reaction to themselves .
There are truly oppressive assholes in this world but they (in my experience) are relatively rare in real world day to day living. If someone is being hit by them left and right either (1) you are very unlucky (2) you need to find new line of work or (3) something you are doing is causing people to react to you with anger or distaste.
Typically what invites this reaction in many cases is being a mopey, depressive, negative attitude sad sack. This generally causes people, even normally decent people, to bristle and reject you. Assuming you are not living in sociopath central you may need to find a better way to communicate with people. This is generally a deep seated issue and just telling someone to stop being “that way” re their negative attitude is not enough. It can be made much better through meaningful behavioral change but it requires a solid commitment to follow through on this. Psychiatric therapy and drugs might be helpful in this also.
Another possibility is that you are an under performer at what you have chosen to do for a job or vocation and even if your attitude is OK your negative performance causes your co-workers to dislike you and this negativity can spread over your whole life. The good news here is that this can corrected simply by choosing something different to do and the positive influence of finding a job you like also ripples outward to other parts of your life.