PRs are going to get fewer are farther between unless you continually ride in different places, and even then there's a point where they stop showing up almost entirely. Because for every segment you routinely cover, there will always be that one day where everything was just right, and you went as fast as you're ever gonna go in that spot. Getting older certainly isn't going to help future efforts.
My Strava PRs by Year:
2016: 1,368
2017: 1,190
2018: 632
2019: 250
2020: 98
I mean, there are a decent number of segments I've covered over 500 times.
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