Best ways to come out of a-fib?

I was diagnosed with Afib and then after about 2 months I had a cardioversion that got me out of Afib, and then 2 months later pulse field ablation. Hasn't been that long since the PFA, but at my checkup last week everything was great.

Some use the Valsalva method (you can go to YouTube and/or google and it will be demonstrated). Some dunk their head in cold tap water (yes, it's true, and they swear it works quite well most often). Some just get up and move around. Sometimes putting your mind on something else at least makes you feel better. Some exercise, like going for a brisk walk or a jog.
The previous responder has listed another method, but it means a trip to the local ER. Sometimes cardioversions work, sometimes they don't. Sometimes they work for months or permanently, other times they work for just a day or even less. You'll find out how they work for you if you elect to try one.
Some bend over, while seated, and let their upper body and head sag fully between their knees, bent right over, and stay there until they feel a shift, or sometimes when they sit up again their hearts lurch back into NSR.
Just a word of caution, in case this is news to you: (I'm not a medical expert or practitioner, just someone who has self-educated on heart arrhythmias) If you are fibrillating, you should both consult a physician AND be on an anti-coagulant. There is a higher risk of stroke when fibrillating, and for some days and even weeks after you resume normal sinus rhythm.