I'd invest in a better microphone for now. For around $250, you can get a used AKG C535EB. It is a hand held condenser mic, so you will need 48v phantom engaged on your interface preamp. These mics are not real expensive, and are used by professional studios in place of Shure SM58s and Beta 58s. C535 EB | Reference condenser vocal microphone
If a better mic gives you better recordings, then consider an upgrade of your audio interface/preamp.
If a better mic gives you better recordings, then consider an upgrade of your audio interface/preamp.