"Its possible to be profitable in trading as a retail trader"
Yes, if I could do it, some be able to eventually wear out the screens and your eyes and do it too, but it is so not easy. After you fine tune your methods, number of years goes by and you think "why couldn't I figure this out back then", cause you are your own worst enemy. Like I am manually trading whole day-today, it is only four hours and I am exhausted as I have not traded this long in long time. I have to keep getting up and take a walk, get some water to stay awake. I keep thinking of excuses of stopping. The old "excuses" I lost long ago of forcing trades not there though are gone, getting in early were stopped long ago, just wait it out, all those extra trades never worked out well.
Ongoing I always do is label "conditions" of what will STOP the signal from happening, it won't stop forever, but have to wait so many bars and at better prices. Support/Resistance -read up and study all the patterns. If there are none, then clear signal, I use time stops are for my methods, good winners never linger, so many bars need to lock in a tick, let someone else pay the fees and if in negative, target one tick to get out or at worse is breakeven. If you check out one minute ES starting 12:45 est, see how many hits near 2136.00, 9 times, but in first fifteen minutes I would not consider taking a buying signal, then after that I was buying as I have learned too much resistance, price often busts through. Price breaks lows by one tick then higher lows, I am positioned long.
Entries = risk, where one enters from the highs or lows plus so many ticks/points most of time work out well for me for playing "tight" trading, first hour usually more action.