Most fights are in confined spaces ( a bar ) A lot of fights end up on the floor. All fights are extremely tiring so Judo is great for self defence. Jujitsu is similar to judo and yes you grab a gi but it's similar to grabbing a coat.
I respect Judo, it's and incredibly skilled sport and I only wish more people especially women took it up to protect themselves from predators.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.