Hi Lornz - Good post. And don't feel bad. At least you analyze your results honestly and know what areas to work on if you decide to go forward with your trading.
I didn't do well with the Combine either and it was mainly due to the T4 platform. My strategy requires a lock-in of small profits fast several times each 2 ticks apart and moving the stop as soon as the profit is locked in with the runners managed manually. Couldn't do it on the T4 - too slow, too inefficient - a big mess. I understand TopStep will offer Ninja in about a month. This could make a tremendous difference to results because you can design templates for the DOM and execute your setup with one click.

Good luck to you and thanks for posting your results.