Berst I've done is 28kg in 3 months but didn't have the stresses of work etc. Ate bugger all and rode 20 miles daily min. Not everyone has the opportunity-I don't now :O(
Try riding slower-burn fat and ot your glycogen-making you hungry.
Prep your own lunch-tuna, fish, chicken-make it yourself.
Keep a diary. Training and diet.
Even though I lost loads I put it back on over 3 months! working 7 days a week-no excuse-neglect.
I was 98kg in May and now 92kg with 12kg to go-it is hard work but stick with it-have a goal etc. I plan to be 88kg by July-kg per week.
I'm 6ft 1 and classed as overweight on bmi. Need to be 84kg min. 78kg is my target but I'm not small build.
Ever thought of summerising your daily intake in grams and kcal-tedius for some buy it might shock you how much extra energy you were consuming.
I looked at my diet and I was stationary and taking in 3000 kcal! back down to 16-1800kcal and doing 30+ mile fast endurance rides 3 times a week plus my commute of 12miles round trip which I do slowly.
It will be 3 months before I am happy and 12 months before I am race fit.
Just don't give up, be realistic and patient. Once it's all off-keep it off!
If I can do it anyone can. I find the hell of a steep hill that grinds your teeth causes pain-blame that pain on fatty foods! and you'll never touch the fatty foods again.
Eat more protein-feel full. Fruit is great but don't aeat 5 apples-just 1.
Look up low GI foods that keep you full longer-rolled oats porridge. Luckily some diet foods taste great!
You're riding fat and using up energy only for your body to replace it with more. Try riding slower-engage fat burn-use up 150 kcal on your ride not 200. But you won't feel like consuming anything.
You need to add mileage and do some weights at home etc.
Good luck and don't give up.
Drink plenty of water too. 1.5 litre spread out over the day.
You're not alone but don't join the give up club!
You can do it!