it sounds like you're into action/thrillers? that's not my kind of read, but I was thinking, if you can't find the book you want to read, why not write one? I know what you mean about struggling to concentrate on long books. matt Haig says in his book, 'Reasons to live', you should read and just read what you can it doesn't matter how long it takes to finish a book, you do what you can manage at the time. I think reading is very healing, so keep it up, good luck.