I was trying to hang an IKEA Kallax shelf on the wall but ended up tearing away part of the wall. I am not too sure what kind of wall this is (in a ~1960s apartment building), first layer looks like drywall, no idea what the brownish layer is, but I know there's probably concrete/brick behind the brownish layer since I couldn't drill through it with a regular drill.
What's the best way to patch it up so that I can try redoing it?
Originally tried using some plastic anchors with screws for drywall, but the wall was too shallow and the screw + anchor couldn't go in very far (clearly wasn't enough to hold the shelf as you can see). I am thinking of trying to drill into the concrete/brick after patching the wall up and using some sleeve anchors . The shelf weighs ~35lbs and I will be using 4 anchors to hold it up, so I would like the anchors to be able to hold up at least 50lbs in total.
The hole is about 4 in tall on white part and 2 in tall on brownish part, and 1 in at its deepest.
Any tips on what type of anchor I should be using?