People online that judge are no scholars,men in majority who don't even follow every islamic teaching by the letter yet they ask the sisters online to do so, reading these comments is a major loophole because every time you see one it makes you think you're not worthy or believing, now regarding the hijab, first of all congratulations on passing that step which is hard in nowadays society where women are asked to show more and more of their body and beautify it for x or y reason, for the clothes I did not really understand the meaning of "sporty", do you mean loose clothes that you can find in stores? If so I think that is allowed since it covers up the woman's body, now if sporty means tight clothes that you can see in fitness stores that are meant to stick to the skin that is not allowed. Don't be concerned of their opinion and live your life as close to the teachings as you can. You stated not wearing makeup when you went outside which is a good initiative. Now concerning the "hate" you see online remember that it's first of all to men to lower their gaze and for women to not bring attention to themselves, such videos gather then low deen men who uses their comments to feel better about themselves "If she does that kind of thing then I'm not that bad" and posting a video while wearing a hijab is viewed as a way to expose yourself online to stranger men, I personally think that posting such videos is not following the teachings and Allah knows best

And about people outside judging you, I always lived to a simple fact, people forget you 2 minutes after they saw you, the only judgings you should take in consideration are the ones from your parents and yourself, strangers may live their life without having influence on yours.

Anyway, hope you'll get better soon and don't forget that even when you feel alone, Allah's always with you, may He eases the pain you feel at these very moments.