Nearly Relapsing, I am needing a new strategy. Does anyone have some tips?

So, I quitted University a month ago. I really had mental health problems and didn't enjoy studying economics at all. Now the last few weeks I didn't have "anything" to do. In the first three weeks I always kinda found something for me to do or some tasks to complete. I like sports (especially martial arts) a lot, as I am a BJJ athlete. But I can not do sports all the time. If I am doing to much sports (i already join 5 trainings a week), I am going to be pretty tired and burnt out quickly. As I now have a lot of free time and the weather here in Switzerland in April is pretty bad, I do not know what I really should do. I am doing a variety of meditations, reading stoicism books from Seneca and also other european literature. To distract myself I often just drive around in my car or go for a walk, which a lot of times seems pointless. I already installed Porn blockers etc. However, when I am bored, I tend to become really horny and it becomes quite hard for me to control my thoughts. I will go on to Wikipedia or youtube to search for the pornstar, that I watched two years ago. Luckily, because of my Pornblocker I don't see them naked or doing disgusting things. How do I really stop myself from doing this? And what should I pursue or do instead?

Actually I do not really know what I should do with my life.

Luckily I had nearly 2.5 successful years of not watching porn (I failed about 4 times, if I remember correctly)