Details please. I found a setup that I like and is a lot cheaper than cigarettes but there's always room for improvement. Also, let me know what kind of cigarettes you used to smoke.
I use this box mod:
https://www.elementvape.com/geek-vape-aegis-solo-100w-box-mod
I use this rebuildable tank atomizer:
https://www.elementvape.com/hellvape-rebirth-rta
I use this cotton:
https://www.amazon.com/gp/product/B01M099DKS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
I use this wire: https://www.amazon.com/gp/product/B07CHSG169/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1
I get propylene glycol and vegetable glycerin from this site:
https://www.liquidbarn.com/collections/all-flavors
I get most flavorings from here:
https://shop.perfumersapprentice.com/SignIn.aspx?ReturnUrl=%2FSignIn.aspx%3FReturnUrl%3D%252F
And, I use this site to get the mixing percentages:
https://www.steam-engine.org/juice
Almost everything else can be found on YouTube and this site:
https://www.e-cigarette-forum.com/
Liquid Barn stopped selling nicotine sometime in 2020, so I stocked up beforehand. There’s likely other sources on the E-Cig Forum listed above.