Macbooks and Apple keyboards in general lack a physical del key (in ibm keyboard terms). They only have a backspace, which they label delete.

Fn+backspace works as a shortcut, but they’re on completely different ends of the keyboard so you need 2 hands. Ctrl+D also sometimes works but is inconsistent across applications.

Also, unlike all other vendors, Apple places the fn key on the far end of the keyboard, instead of the much more used ctrl which is now in the middle. When typing I find it much easier to quickly hit the furthest key than the middle one so I often hit the wrong one.