Well, you've got a good battery - I just bought that same one.
I THINK that's a "Castle" rebuildable dripping atomizer (RDA).
Do you have a vape shop you can visit and ask for some help with the coil and wick??
Youtube has a TON of videos - but it would be great if someone could help build a coil and wick it and TEACH you what they're doing at the same time!
There MAY be something funny going on inside there - it's hard to see. But there's 1 coil and you may want 2 for big clouds(also if the cap has two holes), and the wick may be falling apart (what's that stuck on the inside of the cap??).
You DO need to learn to re-wick, and maybe to re-build the coil.
Here's
one build (high energy dude), and
here's another (low energy dude).
You'll need an ohm-reader, to make sure your coil is SAFE - not shorted, and not TOO low resistance for the battery...
ive actually never taken it off till now, it was a handmedown from a friend.