Nits help

So I just found these in my hair when I’ve treated them multiple times for the last 2 weeks

I’ve used the nit extermination leave in stuff which I don’t think done anything except make my hair feel very very dirty

I’ve done a cider vinegar wash and I’m now

Shampooing with tea tree oil

I’ve got my parents to comb out my hair multiple times but I have very long curly hair and a lot of it and they work till about 8/9 so when they get home they obviously don’t want to do it and I’ve tried my best to do it myself but it’s obviously not worked

Any tips to help get rid of them