It is really simple, not much of a system, just a conservative way to play. All I do is place the 5-9 and call them off after two rolls, win or push. I can't count the times that people 7 out on the third roll or 4th roll. I only aim to win about 10-15% of my bankroll at any given table. After that I leave and move on. It has worked for about 3 years at the very least of monthly playing, and about a year of twice a week play. I've been to Vegas about 4 times since I started playing like this and win at nearly every casino that I enter. It is not big money, but it is still a profit. My bankroll is not huge so I bet a conservative amount of money. Go ahead and give it a test. I also set a loss limit as well. Usually about 25% of my bankroll before I move on to a different table or different casino.
If this isnt proof that you have zero knowledge of how probability works, then I dont know what is.
Quotes like "I can't count the times that people 7 out on the third roll or 4th roll" are a casinos wet dream and why some people continuously lose gambling. The fact that you think there somehow is a greater chance of a 7 on the 3rd or 4th roll vs the 1st, 2nd, or 50th is all you need to say in order for everyone to understand that we are dealing with someone with no grasp on reality.
Also, your imaginary time frame of leaving after you are up 10-15% have no bearing on reality either. The laws of science and probability state that from the first craps roll of your life until the last craps roll of your life, its one giant session. The dice dont have memory. The fact that you have convinced yourself that by leaving after winning 10% is somehow beneficial to you is comical if it wasnt so sad. The very next time you go to the table, whether its in 5 minutes or 5 years, your odds are exactly the same on the next roll. Moving to another table or another casino or another city or another time have no bearing on your overall EV.
And your strategy of placing the 5 and 9 at a 7-5 payback (when true odds are 7.5-5) only adds to the stupidity of your strategy. There are much better odds on the table than placing the 5 and 9. Why would you choose the 5 and 9? The fact that when you are presented with numerous options and you pick one of the worst, only further shows how ridiculous you and your strategy is.
You are young and very naive and it will take a learning experience for you to realize how wrong you are about all of this. If you continue, it will definitely come. Just a matter of time.