Why does my vagina feel different :/

Recently sex doesn’t feel the same for me, it’s almost like I’m numb done there. I feel as if I’m loose. I don’t have sex that often maybe once every week or week and a half. I always felt tight down there and needed to apply lub for my guy to get in, as of recently noticed I can just put him it without which I’m okay with. But I don’t feel the same from the inside. I tried to masterbate which I haven’t done in months and it took forever for me to climax which never takes so long. Could I just have a low sex drive thats affecting my pleasure? I am on depo shot but I’ve been on it for a while and didn’t feel like this. I feel so bad like I’m slack when I don’t even have sex often 😩😩😩 I’ve tired kegels. Sigh I’m really too young for this.