Hello @nanax4, and welcome to Mayo Clinic Connect.
@kjr11 posted a beautiful post meant to help all who will listen.
I was a dedicated smoker for over 42 years and NEVER thought I could quit. Mostly because I didn't want to, I enjoyed my filthy habit. And also...I had tremendous FEAR that if I tried, I would start again, and IF I tried, I would crave them so bad it may make me crazy.
Part of that was true...fear of quitting something I enjoyed might mean I would never enjoy my life without those lying little sticks of poison.
Cigarettes are liars.
They lie to you and make you think they are your friend. They are always there for you.
When you're stressed.
When you're happy.
When you're sad.
When you're mad.
When you need to think.
When it's time to relax.
When you need to calm down.
During commercials.
At weddings, baby showers and funerals.
After dinner. Before breakfast with coffee. With a drink. The list goes on.
It's all a lie!
They are NOT YOUR FRIEND, they have lied to you and made you a slave to them. A silly little piece of paper with tobacco and nicotine and other cancer causing additives are NOT your friend.
This is an important concept to understand.
I also quit cold turkey. Not many people are successful, and start again, like only 8% are successful. I also have a full pack and a half of a pack in my freezer. In case of emergency I told myself. Knowing they were there (and still are to this day) gave me some peace. I didn't want to be going to Circle K at 1:30 AM on the day I was going to break...but I have not touched them.
Thankfully, it did not take getting bladder cancer like @kjr11, which is certainly a reason to quit. There are numerous other reasons to quit, which being a former smoker I know them all, and bet you do too.
I was also an athlete and felt pretty good being able to run and hike and ballroom/swing dance like I did. Plus, I only smoked like 5-6 day. That's not bad, right? Ha! Wrong!!!
But I knew. I knew it was going to catch up with me someday. I also felt like a hypocrite.
We don't need to be told how bad they are...we know. So no need to go there.

I have shared before in the "Smoking Section" at Mayo Clinic that the easiest way to quit smoking is the one that works for YOU!

Everyone that has ever quit this filthy and expensive habit will say they feel better and are grateful to not be a smoker.
There is NO downside to quitting.
You feel better, smell better, have more money, and have more time for real things, rather than standing outside, away from gentle people while you puff and drag on your cigarette.
You are a winner when you are a quitter.

I can share that Allen Carr's Easy Way to Quit Smoking book was a tremendous help to me when I first started. I loved learning the reason we are addicted to this hideous little creep.
I also got several bags of hot cinnamon candy at the Dollar Store and each time I wanted a smoke, I'd pop one of these hot and spicy candies in my mouth instead of lighting up.
I would take time during the awful cravings (they are real--they are awful) and straighten up a drawer. Or my pantry. Or the linen closet. Anything to use my hands and get away from the thoughts for ten minutes.
I can promise you this as well, the cravings are BAD. You will want to give in to the liars, but oh how wonderful you feel when you went all day without one. And then another. And a week has gone by, and now a month. And one day, you realize you went several days without even thinking about them. Hallelujah! You did it!
It WILL get better. Be prepared to fight for your life...because in a sense, that's what you are doing.

You have the power inside you. Sounds like Darth Vader in Star Wars...but it's true. It is within your ability to do this and nothing anyone says can make that happen.
Only you.
The excuses for not quitting are exhaustive. There will always be stress in life. 100%. For real.
I still crave them from time to time, but after 8 years, I know I will never go back.
And just like @kjr11, I too, was shocked how good I felt at two weeks. In a month. And now forever. I felt incredible!
You ask for "any real suggestions" but you may be blocking them because in truth, you don't want to quit, so you don't want to listen to suggestions...you will have a reason why you can't quit.
Here's the Truth:
You can quit.
You can quit.
You can quit.
You have to want it!
What will you lose by quitting cigarettes? Make a list. Read it. Ask yourself, what will I lose by quitting cigarettes?