You are years away from having a well back tested, forward tested, real time then programmed system. I have decades of experience, and even still most of systems I develop are quite easy and very robust, meaning I can trade 30 second to monthly charts and changing nothing on half of them. But to get there, you have to learn much on charting, risk management, ability to read your stats, MAE, MFE and to fully understand when not to take some signals, when to bail out early and when to exit or reverse. Anything I trade over 29 minutes gets hedged, so learn about options and futures. Takes a solid year of watching the DOM and charts to understand there are a couple repetitive patterns and unless you have automation, they happen so quick-can your eyes pick them up-mine can't but if you program you can, comes down to being able to know what you are seeking and how to program it.
You develop, then backtest over 10 years of tick data then forward test for appro 3 months, then real time very lite, then program for automation so no errors made under stresses.
This of course not only way to trade, depends on personality but also great deal of knowledge and memory and at least 10,000 hours.
If I knew how much time I have killed becoming me now, I would have never ventured into trading and stayed in longer term stocks, most that have made it in financial community - made it in stocks. Between fees and taxes are higher, loss of salary/bennies, trading can be very expensive for starting out this direction.
Good luck.