Calories in vs. Calories out is the very first thing you need to truly keep track of. The primary reason for forcing you to do some homework is so that you can see just how close your calorie balance is. Do understand that the calculators are just to get you in the ballpark, and individual physiologies vary.
You can only improve what you measure
- Track how many calories you are eating every day
- Track your body weight
- Track your measurements (waist, chest, arms, legs, etc.)
- Track everything you eat (snacks included, don't lie to yourself)
Your TDEE (for lightly active) puts you at needing ~2300 calories a day to maintain your current body weight. Considering that you are not very heavy to begin with, you need to aim for slow weight loss. If you've lost as much as 1-1.5 kg you're going at the right pace. Aim for 0.5 kg / week.
Your exercise has a huge cardiovascular component to it, which is good. However, if you want a firmer body you may want to trade some of your cardiovascular work for strength training. I wouldn't give up your cycling or running (whichever you like more), but perhaps spend only 20 minutes doing that and the rest of your time lifting weights. You may end up gaining a little weight, but losing fat--and fat loss is usually what people are after.
Lastly, there are a few tweaks to your diet composition that might be beneficial:
- You only need 1.8g / kg body weight of protein, so for you it would be about 118g for the day
- You might want to exchange some of the fruit for high fiber carb sources like oatmeal or quinoa.
The high fiber carb sources are low density foods, so they fill up your stomach without packing in a lot of calories. That helps with satiety, and it can also help with adherence to the diet because you don't feel quite as deprived.
Last point is that it is possible to go too low in calories. In at least one study there was a statistically significant population who's metabolism slowed down to the point where they barely lost any weight on the protocol they were testing. The remainder lost weight in accordance with the calories in/calories out balance. Slow and steady fat loss always wins over crash diets. If you cut out too much, you may be undermining your own success.