My first fast was for 13 days. I want to re-do it better. So, please HELP!

Hello! I’m M - 172 cm - 72 KGs (5.7 - 159 lbs) I have started my first fast on January the 1st (76 KGs) and ended it on the 14th of January. (I know the numbers might seem ok but I am really fat; Belly, Love handles and big thighs) I really feel like losing 4 KGs in almost 2 weeks isn’t quite a good result comparing to other people on this SubReddit.. 1) I was drinking bottled mineral water and i am thinking maybe it contains too much minerals that keeps my fat burning slow? Ca++ 44.58 Mg++ 13.24 Na+ 0.81. mg/L HCO3- 195.23 No3- 2.87 pH 7.89 Is it okay or should I change it? 2) I used to put some table-salt on my hand and just eat it when I have dizziness/headaches, do you think I should use a special salt? 3) Sometimes when I go out I feel like it’s getting hot (altho the temperature is really low), I begin to sweat that I sometimes take off my jacket, my stomach aches and I feel like I want to throw up out of the blue... (Happened in the last days of fasting in Carrefour, Metro Station & a Library) but when I go home and rest a little I feel better but once I have thrown up (it...was...just...water...) 4) I want to re-fast from tomorrow, any advice?? Thanks!