Hello all. I've finally figured it out. The answer was quite simple. I went down the screensaver-rabbithole but I learned a lot about this operating system which I'm glad since I'm new. Usually detours come in handy.
I reset my screensaver situation to the best of my knowledge and relied upon the screen blanking that came built in under Settings -> Power -> Power Saving -> Blank Screen. I set it to 1 minute.
For the screen to not lose signal i set "xset -dpms"
For the mouse cursor still visible I launched my script from autostart applications instead of as a command in .profile.
Thank you all for your feedback. I hope this thread will come in handy for others like me.