I agree with James that you did pretty well for your first wedding!
Also, I think my camera like buffered or something (idk if that’s the right word) because for one of the couples my camera would not take the picture. 😩
How many frames per second were you shooting? 🙂 You should be able to get in ~20 shots before the buffer is full, and even then it shouldn’t stop shooting unless you have a very slow SD card that can’t clear the buffer fast enough. I think it’s much more likely that the AF couldn’t lock on, and prevented you from getting the shot. The combination of moving subject and changing light can definitely cause the AF to struggle.
The 2 shots that you posted of people moving in the aisle are good and sharp; great job! I think a bit of good post-processing with sharpening and noise-reduction and horizon leveling will make them even better!
Perhaps it’s my low resolution screen, but many of those pictures look kind of soft when they’re scaled to fit my screen… When I zoom in I can see that they’re sharp, but “normal” viewing feels soft. If you’re using Lightroom, consider setting some export sharpening. That should improve the “default” look for someone who doesn’t pixel peep. 🙂
I’ve attached an example of how I would edit and sharpen the first photo you posted.