Uhh, famously, Sweden? Where have you been?
https://today.yougov.com/topics/international/articles-repor...
Sometimes I just forget too. I accidentally terrorized a young couple at Joshua Tree last weekend, because I didn't have my mask on, I was out climbing and in my 'happy place,' and I completely forgot there was a pandemic and just wandered right by them and waved and said 'hi.' It wasn't until later that evening that I realized why they were looking at me with wide-eyes and edging away from me. So, I wish I had just left the thing on in that case.
So telling people to wear what they couldn’t get was awkward.
There's also completely different base-levels for access to healthcare, different climates, a ton of factors besides masks.
One might as well point at Asian countries like Taiwan, Vietnam or Korea. Those are densely populated countries were mask-use is wide-spread and generally considered to have done best in their response, with the numbers to back it up.