Lady Gaga relied too much on the gay community and most of her music/videos/performances/outfits are not appealing at all to the general public anymore. That worked great in her first eras, when she still had the public, but now it's a downhill. The general public started to turn their back on her during the last era and the gays saved it, but now not even they are giving two ***** for her
She still can solve it somehow with her next album tho, but a radical image/soung change is needed.