If I understand it, when in SHARES the same number or more than the current difficulty appears, I would have 1 chance of finding a block, is that correct?
And the SHARES monero amount increases with each valid action of the miners, right?
I corrected the word for you based on your last post.
Also, you are confusing yourself, the amount or number of shares means EXACTLY nothing to finding a block, a bitcoin block is just a hash equal or below target ( in other words, = or > than difficulty).
The protocol does not care about the number of hashes you submit, if the current difficulty is 1000 and your share you submit 1 billion shares and none of them is above 1000, then you get no blocks, if you submit only one share that is = or > than 1000, you get a block reward, it's pretty damn simple.
But! your chances of getting a hash that is above 1000 will INCREASE with the more hashes you hash in x amount of time(the more work your miner does).
Imagine you are rolling a dice and the goal is to get the number 6, your hands are slow you can only roll it once every minute, someone else rolls the dice 100 times a minute (they have 100x more chances than you do), but still you can get 6 at the first trial and that person doesn't get any 6 for 6 days straight, but what are odds of that happening!