OP,
Not sure if you've noticed the "InfoZone" tag at the top of the forum, but this was an important read for me and really helped:
User technique - ECF InfoZone
As others have said, vaping is not smoking, and the technique is different... it's a little more of a 'process' versus just 'quick drag' from a cigarette. During my first few months of vaping, I would a) draw vapor into my mouth, b) wait a second or so, c) inhale into my lungs from mouth, d) SLOWLY exhale through my nose (not my mouth).
Using that technique I was able to completely quit smoking immediately upon buying my first starter kit, which really sucked compared to the stuff out now (an EGO-C, which was limited to only 3.4v). I used 24mg juice at first.
Also, as others have mentioned, you WILL get cravings for a cigarette for a few weeks after quitting because there are other things in tobacco smoke that are addictive. I recall getting a few particularly bad cravings for a cigarette about 3 weeks in, even when vaping my face off with that 24mg liquid. THEY WILL PASS, trust me!
Finally, gear is important. Not all atomizers are created equal, and the mount of power that your battery can put out makes a difference.... higher wattage (which is a combination of atomizer ohm resistance AND the ability of your battery to put out the amps needed to achieve those watts) results in more & finer vapor and a higher "hit" from the nicotine. You will see posts of experienced users dropping their nic levels when switching to higher powered atomizers and/or mods.... there is a reason.
Stick with it, and don't feel shy about posting when you need support.... many of us have been down this road already and are willing to help.