So I tried it and I'm not getting a buzz at all.
I just want to know what the possible problems here are. Is it the liquid? Maybe the problem with the faulty atomizer? Or maybe I'm growing a resistance to it? I know that at the end of my usage of the bad atomizer I did need 2-3 puffs whereas at first 1 was just enough for a nice head rush (and i mean it was a really nice buzz). Now I don't get it in the slightest.
Welcome to addiction, in case no one else has welcomed you.
Or maybe I'm growing a resistance to it?
You want to yell Bingo, or do I?
Any kind of substance we use will eventually become
normalized for our own individual bodies. Those who use the big H do enough to get on the A train and feel good until they realize they're already where A takes them. The next step is to go a block over and catch the B train and so on it goes. The same can be said of nicotine, cherry pie, vodka. You know you have
used your substance of choice but you're not
feeling it.
You might try bumping up your nicotine content in your juice. I would suggest trying maybe a 9 mg/ml. If that lets you feel the nicotine all is alright. We each have to find our appropriate doses and sometimes we go up, or down. There's a lot of varied vectors (things, processes) which contribute to our individual enjoyment of nicotine. If you're wanting off nicotine try not going over 9 mg/ml. More than that and I think you would lose yourself further to addiction.
I use 18 mg/ml and always have. That noted my case is way funky. I live with Kalmmann's Syndrome, a congenital dysfunction which wires a person's wiring and chemistry a lot more differently than lies within the
normal. For me the 18 mg/ml is what I
need and not more or less. Yes, my body likes nicotine, caffeine as well.

One chemical is a stimulant and the other a depressor. One gets you up, the other takes you down.
I find a happy medium with them, yet still seemingly need other medications psychologically, which I'm given to think may not be needed at all. I just need to recall the "don't give a f@!k" and the "sometimes ya just gotta say f&*k it" principles more so in life. I think many folks can benefit from them, if we're all honest.
So, ... yeah welcome to addiction. I'm kind of sorry to see anyone else here but that's life for us all, poop happens, we keep on keeping on. As to the harsh taste in your vape you might try using a higher percentage of VG and cut back on the PG. Some can't
stomach the PG good, others the same difference with VG. Most of it is subjective and nobody can tell anyone else the one and definitive way. No such creature exists and if someone tries selling you that, just walk on by.
Well I better get to, ...