sex isn’t enjoyable anymore

i’m 21f and i feel like i’ve lost sensitivity in my vagina or just don’t feel like sex is pleasurable anymore. it’s not like it hurts or is uncomfortable but it’s also not enjoyable it literally feels like nothing. and it makes me not want to have sex at all. even getting fingered doesn’t feel good it feel likes nothing. does anyone know what could be the cause or what i could do to fix this