sorry I can't help with any advice, but I have a funny little story. My sister has three kids and her oldest is 3 and she told me everyone always talks about terrible two's but nobody ever warned her about terrorist three's lmao. I thought it was funny

I put them on time out but if we in public I pop their hands

Relax. It'll pass. I always remembered this when I was young I flipped out in the store because my mom said I couldn't get some candy I wanted I tossed myself on the ground and rolled around screaming....she ignored me. I never did it again because I knew I wasn't going to get a reaction. I used to be a nanny and when my kids would toss fits I wouldn't reason with them I wouldn't yell I just didn't react. After they were done they were put on time out and we moved on. The parents would yell beg or plead and the behavior continued. They knew with Kimmy I wouldn't tolerate the behavior because I wouldn't give them a reaction