>>11451962
The soldier you've described and drawn rather well is from the classic Matchbox US Infantry set, widely copied, cloned and reproduced. 90s-00s is when I found them most often as well, since that time they've been eclipsed by other sets like the reimagined Timmee Vietnam War troops.

While you can still find places to buy the original Matchbox ones they're not cheap; currently I can think of one set that isn't that army per se but was reproduced based on them. The caveat is the set comes with three other armies, also heavily based on older sets.

https://www.amazon.com/Playset-Including-Realistic-Positions-Collectors/dp/B00BT5JBVY
If you're in Canookistan it's going to hurt some (I bought 2 sets...)
https://www.amazon.ca/dp/B00BT5JBVY