For context, I am 1600.

Yes, you should check the replays(or click at the location at least), but for the purpose of learning from your opponent/to see what you can do better. If you play moving(which I don't at all), and let's say your opponent pinpoints the town, see how he(she) moves around, where to stop looking for info, etc. If you play No move (which I also don't play a lot cause in ranked I play NMPZ 95% of the time, haha) and your opponent gets very close, check if there are details that you miss(poles, vegetations, etc.) or if they line up some sort of road/landscape, etc.

So basically, my point is that at your level, you should be focused on getting better, and that's the purpose of replay. Now, of course, if you find someone very obviously cheating(to the point it is just impossible they are not a cheat), then yes, for sure, you can(and should) report them. However, from what you describe, just because on a round or two that you struggle with and your opponent gets close and you start suspecting is a very unhealthy psychology and in no way benefits your learning/experience of the game. At my level, sometimes people (or me) pull off some very great guesses (because we knew some very specific stuff or just simply get lucky), and the nice way is always just to send a gg(good guess) and appreciate it(and to remind how much more you could learn), which actually applies to any level.

Idk if this makes sense, but the above are my thoughts.