

Only one of those is actually what I’d describe as “polo shirt and sweatpants” - first one isn’t really wearing sweatpants (and doesn’t have super hairy legs like many men) and the third one isn’t wearing a polo shirt. And yeah, the look might work if you’re fit and at least know how to pick clothes that match (color and fit) both with each other and with the way your body, hair etc. look. But the way you’re describing yourself doesn’t really sound like it.
I’ll probably die of dysentery. Just because I know modern hygiene rules doesn’t mean I’ll survive interacting with all the other people who don’t but are used to local bacteria and viruses.