Hi dude,
Welcome to the club, i have the same “situation” as you. I was 86kg and same height, 5’11. I am not sure about your body type, but I am Endomorph and I am easily gain weight/fat.

So, cardio will definitely help and I can see that you dedicate 3 days workout for cardio, which it is great. As for strength training/workout, I prefer split body part but that just me.

Over all, i try to do as much cardio as possible.
I hope my personal experience can help you. I am also a beginner myself and trying to lose some weight but somehow, my weight stop dropping after I reach the 79kg~80kg range.

Please update your journal, we might able to share some idea... we are almost in same category.

Have a nice workout