Try
And
And
Whichever you can make hard enough that you can get to failure in 3 to 30 reps. Do three sets, stop a rep or two away from failure.
Then, over time, make it harder in one of the following ways each week:
-More reps
-more sets
-the same reps in fewer sets
-less rest time
-more weight
Hopefully this helps your glutes gain some muscle.
But just know, the only way to put fat on your ass is to gain weight.
Side note: you don't have to feel it for it to work. If you're doing a glute exercise and going close to failure, you're growing your glutes.