How to "fix" my body after eating unhealthy?

Hey guys I've posted here some time ago I was concerned because I lost 10 kg in under a month and was wondering if there was something I should look out for. For reference I'm 20 year old male I went from 117kg to 107 and I'm 187cm I won't get in detail in how I lost it because that post that I made got taken down by the mods but essentially I was on an extremely low calorie diet (I'm sorry if I broke some rules in my previous post I don't know I was just honest about how I lost it) and people in my previous post pointed out that I would like lose hair and stuff if I kept this up??? I mean I'm really thankful for people pointing that out and I'll get to research but I'm a biology student in university and I've never heard of something like that happening( granted could be bc I'm ass at my job) but like apart from fatigue here and there I don't feel any side effects I'm active workout regularly just today I played football and basketball for like 4 hours and my body is just not asking me for more food I got fat because I was just eating chips all day but now that I'm not and I'm listening to my body I'm not really all that hungry. So yeah am I like guaranteed to be cooked if I keep this up? I feel great idk maybe I'm an outlier? And mods if I broke some rule in this post please tell me which so that I can fix it and repost I need to hear advice. Thank you all