Yeah that’s pretty much it, which collider should I use? I included the image that I wanted to toss a collider around so that the player cannot touch it.
You likely want a PolygonCollider2D Unity - Manual: Polygon Collider 2D reference
Then edit it manually.
You can edit the polygon’s shape by pressing the Edit Collider button in the Inspector. You can exit Collider edit mode by pressing the Edit Collider button again. While in edit mode, you can move an existing vertex by dragging when the mouse is over that vertex. If you shift-drag while the mouse is over an edge, a new vertex will be created at the mouse location. You can remove a vertex by holding down the ctrl/cmd key while clicking on it.
If you’re using a tilemap, another way would be to use a TilemapCollider plus Composite Collider.