Auto Glym Resin Polish is not a wax or a final product, a wax will seal the finish and enhance it. STOP using tcut it is the most abrasive polish out there and this will be ruining your paint work.
Autoglym has fillers and will hide the swirls when you wash it they come back, get some poorboys black hole and use this instead of SRP one buffed off use a wax. Nattys blue paste is a great wax, cheap and easy to use for begginers.

This is after a machine polish, poorboys black hole, Dodo Juice blue velvet wax and Z8 grand finale, the next time i washed it i used a mild shampoo and a plush drying towel and it looked the same for at least 2 months.
Get a mild shampoo as if your shampoo is too agressive it will strip off all the fillers, polish wax etc