The game controls make it more harder than it should be but once you start understanding the mechanics it's actually good.
Basically you want to search a spot the girls body where you get good responses, horniness (Pink vertical bar) is not really important at the first level of models, so it's better to gain enough "acceptance for the hero" (Green Vertical bar).
The more Models you rate, the easier it gets, but keep in mind that some Models are actually a pain in the ass and it's better to just rate 1 in everything (unless you like the body, remember the rate will shape the new girls) and go for the next one, so just rate it and skip it, it takes too much time for the ones that don't want to do anything.
As for the ones that are actually worth it, for the "Chat" option I find it the "Looking for some money" and "Beautiful" the ones that work the most and for actions just keep trying different spots with different speed (remember to use Alt,CTRL and Middle Mouse for different movement and speed), and you can select all of the options of "Can I" options to know what the girl can handle or not, this can be a difficult one because some girls won't tell you or even say No and yet when you try she will actually gain a lot of stats or.. hate your guts.
Once you get the hang of it, you can even start playing without the cheats and the game get kinda engaging to try different ways.
TLDR: Don't go for the ones that are a drywall, rate 1 and skip it. Once you get the good ones just try to gain the maximum of stats possible and try every option, and if you get more "respect"(Green vertical bar) you can ask again for some poses/undress and the girl will do it.