Thank you for playing the game and giving feedback.
I'm sorry that the character bumps so much. I'm aware of that problem but I don't know how to fix it since I don't know what to search for.
The problem is that some tiles are slightly jotted out because they are technically separate objects. In the past it's even worse as sometimes you can get stuck when walking - I partially solved it by changing the player's bottom collider with circle, and the result is the bumping everybody experiences.
You never had that problem? I think I really need some help here... I'm using tilemap collider with no composite collider. All my tile assets are the same size. I slice them manually according to grid size (32 x 32). Additional probably unrelated information I downloaded and used the 'rule tile' (autotile) asset for the game. If you can tell me on what I did wrong I will highly appreciate it.