We did this at birthday parties, I don’t know if you consider that an exchange? At the birthday parties if we were the hosts we also made up little parting gifts for everyone.
When I was very little I made or bought something for my parents on mom’s/dad’s day, also not an exchange.
For Chanukah the adults bought the kids things. Also, not an exchange.
I didn’t really exchange gifts much until I started dating a Catholic and did Christmas with his family. To me the amount of money didn’t was crazy, and opening the gifts was stressful, so my lack of practice was a detriment in some ways. I did get better at it though. He had a big family.
I don’t see it as a big part of sharing. I always was great at sharing, just not great at formal gift giving. I shared with my sister and friends without reluctance. I asked my mom about it a few years ago actually, it came up when I asked her if my sister and I fought a lot when we were very young, because I didn’t remember fighting a lot.