Brand New Vinyl Static and Pops

Dirt on stylus. Drop gently up and down onto isopropyl alcohol soaked spot on Mr. Muscle Magic Eraser a few times.

How are you cleaning the records? Something is not right, or you're doing something wrong.

Muffled again after cleaning a record.

Am I missing something? It looks like the OP is not actually cleaning records, and is not subsequently cleaning a very dirty stylus.