My bad for not requesting a link to what you have. I assumed you got a clearomizer; what you have appears to be a
Smoktech Pyrex Cartotank (or a clone). It uses cartomizers.
Read the links that were previously posted about cartotank setup guide. It will show how to correctly fill the cartomizer and then fill the tank. The cartomizers are a disposable item; good for 2 - 3 weeks and then will need to be replaced. You should be able to fill the tank several times while using the same cartomizer.
There's no good way to "clean" a cartomizer. Most people accept that they are disposable and throw them out after they begin to have a tight draw.
Purchase additional cartomizers from one of these vendors:
VENDOR LIST FOR PRE-PUNCHED CARTOMIZERS
What you will need is an
45mm length cartomizer for that tank. Boge XL, Ikenvape Mega, or Smoktech single coil replacement cartomizers that are pre-punched (laser-drilled holes or slots).
Now that I know what you are using, you probably didn't fill the carto enough prior to filling the tank. This is the MOST IMPORTANT STEP. This likely is what caused you to have unsatisfactory results. That carto is probably burnt beyond repair. Try a different NEW carto following the steps in the setup guide in my blog.
BADITUDE'S CARTOTANK SETUP GUIDE