Should I learn another language when I still suck at the current language I'm learning?

I'm thinking of learning another language (japanese) when I'm already struggling to learn korean since I still suck at it and I'm not motivated to learn it because I have a lot of things to do like study since I'm a college student.Also, I don't consume korean stuff lately (kpop and kdrama). Instead, I am currently consuming more japanese stuff (anime). I have been watching anime long before I got into korean stuff, but I'm hesitant to learn japanese since a lot of people say that it is a lot harder than korean and I'm already struggling with korean. Would I just waste my time if I learn japanese now? I want to hear your opinions.

I am mega lazy to learn korean rn since as I said, I currently don't consume much media from it. I suddenly want to learn japanese but I'm thinking maybe this motivation is short lived and I will just waste my time.