My crush is always sad, is there anything I can do?

So he hasn't been hanging with his friends for about 4 months and he sits on his own, I've gone to sit with him and see if he's okay a few times but I feel like I'm annoying him, we're in different years (I'm a year younger than him) so we only see each other at break and lunch. I say hi to him quite a lot and he smiles and says hi back but a lot of the time he just sits on his own and looks like he's falling apart-he looks like he's going to cry and I really wanna hug him 😩

Today I went to look at his Instagram and maybe talk to him on there but he's deleted all his social media and I was going to start a conversation with him on there but obviously, Me waiting for the right time was only too late 😔 But is there anything I can do to help him? Or should I keep my distance for a while?
My crush is always sad, is there anything I can do?
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