Oh dear, you’ve made an absolute mess:
There are some Faces that definitely shouldn’t be there:

This top Face is wrongly connected:

You could Delete the Vertices in that round part:

and Bridge Edge Loops and reposition the inner Vertices to match the reference, but you should also make sure that these Faces are flat:

(S, Y, 0)
and this mess should be cleaned up as well:

Actually all round corners have way too many Vertices and also the round Buttons…
The best advice I can give you is too start over from scratch!