Is being too nice making me unlikable?

I just started a new job. Im shy-ish but really push myself to talk to people and I feel like I’m very bubbly and ALWAYS smiling. I really try to connect with people by smiling and laughing at whatever funnyish thing they say. I feel like my answers are so generic because I think I’m so focused on them liking me. I always get nothing in return. Sometimes they look annoyed or disinterested. I know it can’t be them because they’re other new people that started and they fit right in. So it’s gotta be me. I must come off weird. I feel like I’m asking the cool kids if I can sit at the table with them. So I guess my question is, is my niceness coming off as fake maybe? If so how do I fix that?! Is it like in the movies where I have to turn into a complete bitch and suddenly everyone loves me because I’m “cool”? Any advice is much appreciated.