Hello, sorry about the negative experience.
To help with the described issue i recommend checking the game walkthru (you can find them above in the main post or follow the links below)
1. First chapter walkthru : 1'st video ( https://chobit.cc/3njy5/164beyn3?utm_campaign=embed&utm_source=external&utm_medi... ), goblins part starts from 2:40
2. Second chapter walkthru : 4'th video ( https://www.xvideos.com/video.uableab556c/slavebar_eroge_walkthru_part_2 )
3. (optional) Free mode walkthrus : 2'nd and 3'rd videos
I hope this helps