Ok i found answer and this video helped https://youtu.be/fkNDanngTfQ?si=Bap3f0SbxokbsgUp&t=603
In short of it
- (if you want to be able to see tile numbers then go to view > show > layer edges then ctrl is default key to show them or view > show > tile numbers)
- Start with view > grid > grid settings
- Then right click your layer in layer section > convert to > tilemap
- Above color pallet you will see mode icons pick middle one which is auto mode
- Pick your color and draw something on at least two tiles (this is only to teach you how to do it normally you can just paint your base tileset)
- Now below color pallet you will have that tile to select so click on it
- And now you can paint this tile over any tile on your canvas
- And now click on any color from your color palet
- In these mode buttons select left one which is manual mode
- And now if you gonna draw something on tile you already edited then it will affect all of its duplicates