so I’m trying to stop my player from flying through collision wall tiles from the tile layer in tiled. Here is what I have on my map in Tiled. These red transparent squares are collision walls. They are tile layers. They are 66x66. This is due to the map & all other tiles being extruded to prevent tile bleeding. I have 2 rows of them because you said to thicken the walls. I tried that, it did not work. It has collision when slowly walking into it, but when running fast then jumping it lets my character pass right through the collision wall as well as the whole level.
Here is a screenshot of the wall I made in Tiled :