Hi nakkax, I know how you feel. All through my teenage years I had acne and it affected a lot of the things I did. Some people's acne does get better and other people's stays around for a long time then some people get acne that comes and goes- so everyone's skin is different. You mentioned acne on your face only which Im sure is hard for you, but just try and remember some people have it on their body too.
It sounds like its affecting you to the point where its not healthy for you, I dont know your full situation but I suggest if its affecting you that much then its time to see a doctor. You mentioned you've already tried a lot of skin care products so perhaps it would better to try something that is given to you or recommended by a specialist. Anyway, something I like to use aloe vera gel because I have a lot of scarring, maybe you could give it a try 
It must also be hard for you if your dad makes a comment like that, Im sure he doesnt mean it to be rude but unfortunately not everyone understands things that they cant relate to. I think you should let your family know that you dont like comments like this and ask for their help and support in helping you overcome acne and ways its affected you.
Honestly, Ive found that people will still be interested in you even if you have acne, not everyone is going to be accepting of it though but most people can see past it. Theres lots of good looking guys with acne. You may not be able to control your acne and sometimes it might make you feel really crap but hey you can control other things, you dont need to change yourself for anyone but sometimes doing nice things for ourselves make us feel better- so wear nice clothes, style your hair the way you like it etc.
Well done that youre still practising basketball and making the effort to go out to the court, even if it is only on Sundays - but that is a starting point
I wouldnt suggest that you stay in your room all day and play video games since that can make you feel quite lonely. So I think perhaps you need to slowly get yourself out more, just little things to get your confidence back again You could go for a little walk, or just go to a local shop. Maybe even meet up with your friends somewhere you feel comfortable at.
I understand it is not easy, especially for a teenager where looking good seems to matter a lot. But remember, lots of people are going through this and lots have been through it. Theres still happy and successful people who have acne And there are people here who understand what youre going through and will try and hep you
You are a normal kid, acne or no acne. Remember that. However, it made me feel really sad when you said you practice basketball only on Sundays as that is when the court is empty. You are a young boy who should be enjoying your life.
Family members, for that matter anyone who does not have acne, do not understand how people with acne feel. So let it slide. You cannot control this. What you can control is how you react to the acne and the comments.
One thing I want you to understand is that people generally care about how you make them feel. So even if you have acne and are loads of fun to be with, people will generally want to hang out with you. I know clear skinned people who make everyone want to run away from them. The problem with acne is that it generally makes a person depressed and despondent and no one wants to be around them.
So ignore everything and just focus on the fact that you are 14 years old and should be having fun. Acne or no Acne!!!!
True friends will always stay with you and be with you until the end with or without acne. If you have a personality that everyone enjoys, they would want to be with you because they like it and not because of how you look.
There would always be that one friend who will care for you. Find him/her and enjoy the bright future that lies ahead of you.
hugs to you too @Koloz