Man I had so many flats sometimes twice a day. Not fun when you carry a spare wheel and 10 minutes after swapping the next flat occurs.
The life changer is the famous green slime aka tire sealant for bicycle tubes. I use a bottle for 2 bicycle tubes for 8x 8" tubes. No need to patch the tube, if the damage is smaller than 3mm you can even fill it in now and it will repair the hole instantly and permanently.
I constantly have flats with thin MTB tires (like almost all) but don’t recognize them thanks to green slime. When swapping a tire I can see the green dots aka punctures on the tubes, several each tube!
So fill in the slime and forget about spare tubes or patch kits (I’ve used many)