If you have, as you said, “tons of friends”, I wouldn’t spend my time worrying about whether people like you more or less because you seem reserved. Like am yisrael chai said, it’s how you feel about yourself that counts. It’s not only a matter of feeling happy, it’s your self confidence and self esteem that matter. Don’t determine your self-worth based on how you feel others are thinking about you. Most often you will be wrong at your assessment of how they think of you, but you can’t always run around checking with everybody to see how they feel about you so that you can figure out how “good” you are.
In a way, it’s like Torah values. Since they come from Hashem, they are not subject to the whims and attitudes of the current society. Your self esteem should come from within, when you recognize your strengths and also even your weaknesses, gaining strength from working on those things you want to change, without this coming from external sources.