Generating collider for destructable 2d chunk

So i cant seem to find the answer anywhere. I have basically a tilemap of pixel that are destructible(like in terraria) but i don’t use the native unity tilemap, i made my own system. My biggest problem is that i cant seem to add colliders to it. I want it to work with rigidbodies. I just need each chunk to generate a simple collision, it can just be a outline(doesn’t have to be pixel perfect).

PolygonCollider2D is too big/chunky.

Any help or ideas are appreciated.
Chunk.cs (2.8 KB)
TerrainManager.cs (15.8 KB)

I don’t really follow what your needs are because physics isn’t pixel-perfect but if you want direct, low-level control of a collider then that’s what the CustomCollider2D is for where you can add/remove/modify your own primitive shapes. This is used for destructable stuff where you create/decompose stuff into what you need and add it to this collider.