from what I read, you completely lack basic nutrition knowledge, and this is the real problem, not the failed diets.
I'm absolutely convinced that you would get an adequate fit starting to study very "standard" nutrition books and understanding what you're doing.
"Losing weight" is a concept that must be absolutely removed. Boxers for example lose a couple of kg in a very short time before being weighted for matches.
Does this mean they successfully got a better shape? No.
Study, and you will understand how things work.
I'm absolutely convinced that you would get an adequate fit starting to study very "standard" nutrition books and understanding what you're doing.
"Losing weight" is a concept that must be absolutely removed. Boxers for example lose a couple of kg in a very short time before being weighted for matches. Does this mean they successfully got a better shape? No. Study, and you will understand how things work.