I am honestly similar with you with acing exams minamen (like 4 and straight A+) and with stable and tru family and stuffs and honestly i was in your postion too yehe ye lack of satisfaction and not being happy about your surroundings and let me just share how i come out off that feeling.... *First i would say the reason you are not happy with your friends may be because you are not approaching them as YOU or may be they are the kind of people you won't be friend with if you are truely being YOU I am not saying you are faking who you are but i just am saying this kind of situation mostly happen when u try hard to please others or just trying to be somebody you are not without realizing it like simple things like fake laughing... All i can say is connect with your self and what i meant by that is, what i put above is the possible reason, so sit down and think about what EXACTLY is making u unhappy dont try to sugarcoat it and face the reality... if people around u is making u feel this way then cut ties with them because honestly all you need is one or two genuine friends who you can be you freely and other couple of friends who will help you to your success or someone with similar goals like you... so just think about this "What is the problem and how can i solve it? What do I want?..." Finally, dont be hard on yourself and these situations always happen, at the end of the day nothing really lasts forever there is a constant change but in all those changes prioritize ur self and your goal... P.s i am an introvert myself😉...Best of luck friend💙