In Minecraft, I'm trying to get diamonds, for both a pickaxe and an enchanting table. Once I have enough, I also want armor. What's the chance I'll get a diamond while strip mining at bedrock? I don't want to cave mine, since it's dangerous. Why I am asking is because I want to know if strip mining at bedrock is better, or quarry mining at bedrock.
Statistically, it is best to strip mine while looking for diamonds at y level 11 (As of 1.18, the current best level for mining diamonds is -57). The exact chance of finding diamonds is pretty much unknown, but in most of my survival worlds, I can find diamonds in 5-30 minutes. The most efficient way to strip mine, is to make a 1x1x1 section at your feet, then dig a small hole at the bottom edge, place a water bucket up high, and then swim into the 1x1x1 hole. This is efficient because you waste 2x less durability on your pickaxe, and have about the same chance that you will find diamonds while in a 2x1 hole. Here is a diagram of how to do this:
(I recommend to do this later in game, just in case you might miss a diamond or two)