Should u unsubscribe to learning platforms that don't have much benefit

I am interested in computer programming and hacking. Last year, I spent 1500USD on some learning platforms like frontend master, raywanderlich, pentesterlab, HackTheBox, Tryhackme Brilliant etc.

Today I realised these platforms don't bring any real value to my career. I subscribe in to them and did some courses because I was curious. But the ROI was not good for my career.