The gauge now starts dropping from F when im at only 1/4 tank. Right now my tank is almost empty according to my trip...but my needle started coming down from F and is now sitting at the middle

So I took off the plate today to see if it was a bad ground maybe (
didnt have enough time on my lunch break to check the floater) All the connections look good. im now thinking it might be the gauge itself or the floater/sender that you guys said. Also my fuel light would never come on before, even when i almost ran out of gas while driving before the problem happened, when i would mess around with one of the connectors it would light up.