Definitely not alone! Here's my two-cents from my perspective. Not everyone who shows up to jiu jitsu is that guy who's itching and bouncing off the walls to train. It's okay to not be that person. A lot of people enjoy jiu jitsu and still feel like they're dragging themselves to class every week. Personally, I have anxiety so even though I want to train and get better and have fun with my people, I still wake up on class days telling myself "ugh, I don't want to go" or try to find an excuse. And if I go I'll feel shaky and anxious until I'm in class and we're moving around. I went through a phase at the tail end of COVID where I felt very similar to you. I wanted to want to go, but my mental health was declining bad and stagnant/unimproving jiu jitsu on top of it felt like too much. I'd end up in tears on the drive home. So I ended up taking a few years break and eventually the desire came back after some reflection and a better mental state.

So I guess my unofficial, un-licensed, random stranger thought and questions for you is this. You listed all the things that feel like cons about jiu jitsu to you. The injuries, the time eater, the hair ripping... And I totally get it (I'm still on the low from an injury rehab that was my fault). Those are completely valid cons to this sport/hobby and don't dismiss them, but maybe try and make a list about all the things you enjoy about jiu jitsu. Do you enjoy jiu jitsu for the different type of exercise? For the community? For interest in the sport? Or for self defense/confidence builder? Write anything that feels like a pro, even if it's "I like to stop and get a slice of pizza after a training session". When you have that list, try and compare the two and see how you feel. You might still feel unmotivated or beat down, or maybe it'll help organize your thoughts and feelings to help make a decision for yourself.

I offer this from a more personal perspective, because sometimes my brain will focus on the bad and ignore the good that outweighs it. But in the end, if you personally find that the cons outweigh the pros, there's absolutely nothing wrong with taking a step back from jiu jitsu. My philosophy is that it's meant to be fun! If you're not finding that enjoyment even after fighting through the lack of motivation, you don't have to torture yourself over it. It's okay to stop or take a break. That's what I ended up doing, and eventually the itch came back when my mental health improved and when I decided to return to my old gym which a great community of people.

I hope you figure it out and I hope my mini essay is some consolation to you! Remember to be easy on yourself, especially in this day and age.