Generally speaking, in my experience, your ball is nearly DOA (in terms of power) when it hits the pocket.
You end up leaving a weak 10 but then the 4 pin misses the 7, thus you end up with a 7-10 split.
I would never move after leaving just 1 of those, because it likely was just a bad delivery or you missed your mark. However, after a 2nd one it's definitely something with the lanes, your release, or how you are playing.
I usually tell people to just make a minor adjustment (half step up/back on the approach, change your ball position slightly, etc.) That's all it usually means, after all, you're hitting the pocket.
A good drill is simply to hold your finish and watch your ball reaction. If it's coming up too late, you're risking the 10 pin, the 7-10, the 2-10, or even the 2-8-10. If you're coming up too soon, then you say hello to the 4-9, 4-6, 4-6-10, 4-7-10, among others.
This game can be so frustrating sometimes right! LOL
(you reminded me of a night I was bowling Colorama in Alaska and I shot 868. The one miss? A pocket 7-10