I've met several people in my life that are like you, at least from what it sounds like in the description you give. Constantly anger and bitter. Probably for good reason, at least initially. And these people were smart people, hard working, honest.
But here's the secret: If you behave like this, then people will only interact with you when they want something from you, leading to an even more bitterness and unfriendly demeanor, leading to even worse interactions with other people.
Instead fake being nice and friendly and people will be nice and friendly with you and after what might feel like forever you will become genuinely nice and friendly. Giving you the possibility to enjoy better people and the better side of people.
But here's the secret: If you behave like this, then people will only interact with you when they want something from you, leading to an even more bitterness and unfriendly demeanor, leading to even worse interactions with other people.
Instead fake being nice and friendly and people will be nice and friendly with you and after what might feel like forever you will become genuinely nice and friendly. Giving you the possibility to enjoy better people and the better side of people.