Feel like I’m a bad mom

Hey ladies, I’m a FTM to a 18 month old. I grew up never really being around kids, like I wasn’t a babysitter or anything like that so I’m really learning as I go with my daughter. My LO is an amazing kid she’s so happy and loving! I know we shouldn’t compare kids but I read that kids her age are saying the alphabet, saying 20+ words and on and on. My daughter has been very slow to talk, she babbles a lot but only says a few words. I feel like am I not doing enough? I’m home with her mon-fri all day, sat/sun I get home at 3 and am home all day. I admit that some days I let her just play with her toys, and we watch her fav movie. Am I slacking? I feel like I’m not doing a good job teaching her.