Ignore the overall rankings (or at least don’t put too much worth in them). Focus on your PRs. The second time (and every time thereafter) you complete a segment Strava will take note and compare it to your previous attempt(s). Looks for trends, either improving or holding steady or whatever it is you hope your body is doing. Keep in mind that weather can play a big role in segment speed (especially wind on a bike, and for that matter, riding in a paceline) as can numerous other factors. Also, GPS is far from perfect especially on short segments. If the segment is under a minute times/paces can be quite inaccurate.
If possible, take note when you were feeling good and/or pushing hard and use that as your basis for comparison in the future. For example, you may find one day you go out feeling good but not pushing and almost PR. That’s an accomplishment. Or you feel terrible yet still run better than you have in the past when feeling good but not pushing. If you go out every time and attempt to PR every segment you’ll get sick of failing real quick. Same goes for chasing top tens against guys who spend all day every day training and cherry pick segments.