Well, I'm sorry you are having a bad experience. I'm not the biggest fan of non adjustable setups myself, they can be hard to work with for sure.
I started with an Aspire Zelos mod (after finding out sub0hm was not for me) and I don't regret, exactly, purchases I made that weren't for me, they kind of helped get me to my happy place. So, I hope you try something else and have more success with it. It's not unusual at all to not land on one's perfect vape the first try.
Anna