You're Right!
Looking at it from a point of Random...
With enough Random Drawings... Patterns Do occur.
It's just that you Need to Know, what you're looking for from a statistical point of view, and a little luck.
Short Term Indicators show, in most of the time, which direction the game is heading.
To break it down more as far as the future drawings are concerned, my beliefs are, one has to take the the time to analyze each past draw up to the last 500 drawings. If the Game doesn't have 500 drawings yet, keep the data history going until the past drawings comes up to 500. You could go beyond the 500 Draws in history, but I don't know how much that would skew the bias in your favor; unless you're more into Long Term Indicators.
The 500 drawings would include different Game Files... as I like to call them.
If you play PB (Power Ball), I wouldn't include the DP (Double Play). I mean... you could focus on the DP if you want, but it's more work in my opinion.
The Main File would be... Monday, Wednesday, & Saturday.
MM (Mega Millions) currently has only one Game File with No Double Play; Tuesday and Friday.
But, in all reality, PB has 4 Game Files: 1) The Main file: Which consists of (All 3 Files) Monday, Wednesday, & Saturday, 2) The Monday File, 3) The Wednesday File, and 4) The Saturday File.
MM has 3 Game Files; 1) The Main File: Tuesday & Friday, 2) Tuesday File, 3) The Friday File.
I suppose if you had a team focusing on each individual game files, or one game file in particular, and conversing with the team on the upcoming forecasting of the next drawing, PB or MM...
Well Then... there might be something to go off of.
Just my opinion.