Potty trained?

are your LO’s potty trained already? my little girl will be 3 october 2nd and still is not fully potty trained.. she’s been sitting on the potty for months now and still has not grasped the concept.. she will tell me only sometimes. I just started putting her in underwear I mean she knows when she poos and pees on the pot but she won’t tell me she has to go she will just stand there and go.. I asked her did she have to pee and she shook her head no then went on my floor about 5-10 minutes later i’m exhausted with potty training 😩 what am I doing wrong?