The main part about femdom game it's you loose against sexy girl who make sexy grapples on you.
But sadly the mechanic of these kind of game are never explain, so it's normal if you don't understand, and it's even hard when stupid boy make multiple road in early game stage, so they hide the few content they had, and you need to play the same demo 5 time to see all the content and take the road with the kink you like the most, only to see that this road is under construction.... but this is an other subject.
For this game, i don't play the last version, but for the 10 last other i recommend you to loose and save money, don't care about loose, in femdom game you get xp when loosing, if you make some dmg you will get more money, if i remember it's 50,100,150 total gold for the 3 fight, so don't try too hard to hurt them, then you buy the best weapon, no need to get anything else for start, get the best 1.5k weapon, best def is attack, and you will "loose" money and time if you get the first tier.
After that you can do more dmg so more gold, sometimes kill her, if you get 3 win, you will get less money than 3 loose with many dmg, and no sexy grapples, so you let them win, as the gold you have and the stuff is uselless.
but when you beat her you unblock 2 new road (why where who? beacause why not) the first road is about submission, do nothing more or less i think, i'm not sure there is impact on relatioship or game
and the second very strange road is a dom road (because everyone know that people who look for femdom game like dom content and conversly, but it's my opinion) wher you can start to tdom the girl, but the work is in progress and do nothing more or less i think, i'm not sure there is impact on relatioship or game
every girl get different stats about dmg or def