I had no idea!!
I quit many times in my life, and smoked when I was a teenager. The most serious time I ever did was in April of 1998. I went many. years then smoked again when my mother passed away. I learned from many, many years that it only takes one to get back on them. Quitting cigarettes was harder for me than drinking, though both were a battle.
The patch really worked for me both times (in 1998 and in 2020). Though at the end of the patch, I craved the patch, the cycle was broken where I thought I was was actually craving the smoke. It was the nicotine all the way. I've not looked back since I quit again on July 8, 2020. Good luck to you, I know how very hard it is.