Starting to try lose weight

I’m 17..I weight 125-35lbs, I’m 5ft 2. Some may say it sounds like I don’t have to loose weight which I get. But I am so insecure, I know what I want my body to look like and it’s not what i have now. I’m so depressed about the way I look I end up eating even more..I am in a vicious cycle of binge eating then feeling horrible for it. I am scared to wear the things I love to wear as they don’t fit me anymore or fit me the same. I have to constantly get reassurance from people that I don’t look massive and over weight. Can anyone give me tips? Maybe small things I can change? My mum does the Keto diet and loves it but I love carbs and sugar too much to completely cut it out. If anyone can message me or leave positive comments that would be great. I’m sick of living like this where I hate my body, it’s the only thing we get free In our lives..and I just abuse it with saturated fat and sugar!!