what do i do with my hair😭😭

tips would be much appreciated.. ive known about natural hair care for years and my hair just doesnt respond lol i used to be obsessed with my hair and being able to properly take care of it, i gave up atp and just shampoo with bar soap and conditioner, the worst part is that it doesn't look different compared to when i used to take care of it😭 hair gurus help