Hello. I'm 20/m and I weigh 107 pounds at 5'7. I've been trying to change my diet in order to gain weight. I've been tracking calories and everything in-between (using MyFitnessPal), and daily I eat about 800-900 calories, however, I'm finding it difficult to eat more than that. When I was younger I had no problem eating because I really fancied most foods, especially junk, but now that I've gotten older I hardly like anything and it's bizarre. Most of the day I'll drink coffee- that is, 32oz total (throughout the day, of course), and 2 or 3 bottles of 16oz waters daily.
I find that I'm rarely hungry and I have a difficult time enjoying food as it is. I live with my parents and they mostly buy pork, chicken, breads, chips, cereals, and other foods- most of which I dislike.
I find the only things I enjoy are eggs, beef meats, and raw vegetables. I absolutely hate bread, corn, and most sweets (except for a tiny bit of chocolate on occasion). My parents try to help me gain weight by buying me pizza, pasta, and other things, but I don't like those anymore either and they assume I lie about it because I used to enjoy those foods as a teenager. I've lost around 25 lbs since the age of 15 due to my change in preference.
I buy myself salads and other things that I like on occasion, but as a college student I can't purchase much so I rely heavily on what my parents purchase.
I'd greatly appreciate advice on what I should do for weight gain and what I could do in my situation. I don't know a lot about dieting in general, admittedly, so any input helps. Thank you.