Obviously what you are doing isn't working. If you want different results you have to try a different approach. Sounds like MA is liking working out in the gym was for me, I would sweat during the workout and be slightly sore the next day. But, it wasn't a good weight loss plan.
Consider adding ridiing to Wednesday, and either eliminating one night of MA and adding a two hour ride or cutting out one hour and either walking/running/biking during that time. Set a goal to do this for 3 months. If my math conversion is correct you will need to lose a little less then 1 kg a week which is difficult but still in the safe range.
After, the 3 months you can go back to your current schedule and should then be in a maintaining weight program.
So you say you are increasingly more decidcated, can you dedicate 3 months to get the results you want?