(Pardon my english)
Hello. I am a 14 year old male.
I weighted 209.4lbs (95kg) at my worst
and now I weight 180.7lbs (82kg) this happened in about
a quarter year or more (I am 175cm tall).
This is my current routine:

Morning: Oatmeal with milk and a spoon of honey mixed in.
School: Whatever is served, I don't eat much anyway.
Afternoon, evening and early night:
Finnish alternative to rye bread with salmon and lettuce
(To keep away hunger I drink water or grab a banana or a orange).
I almost always drink fatless milk with every meal.

I feel stress only from the cold atmosphere here and some social matters.
My main form of transportation is my bicycle (2-4km journeys).
I have 2 hobbies, aikido and fitness boxing, I have friends along.
I feel good with this routine and feel no difference to my unhealthy
way of life, just the opposite. Please, tell me if I can lose weight this way.

You probably could...what you eat at school could be a factor, and even if you don't eat much, a lot of the time, those foods can be bad for you, but other than that, it looks fine

Thank you, jaraku. That was a advice I needed.