I really find it disheartening that someone can say they have played this game for six entire years and are still having troubles with the easiest content this game has to offer which is dungeons. Like, for real, just go work on your own play. Decouple the boss castbar from the boss HP and put it close to the center of the screen. Stop looking at your buttons, it's been 6 years the muscle memory should be there (or, if you need to look at SOME buttons, put them also close to the middle of the screen just for reference). Almost everyone I've ever seen who has problems with dodging stuff, seeing stuff has these problems because they are spending way too much time looking at their keyboard and their skills instead of the arena and the boss and because their UI is not conductive to a good playing experience. Go on youtube and research some system, character and UI settings to make things easier for you and let your body just guide you. Imagine driving a car and having to consciously think about breaking, turning, changing gears... or riding a bike and have to consciously think about keeping yourself steady... these are all things that your body SHOULD know how to do without you having to actively think about it, the same should go for your rotation and buttons and where your fingers go to on the keyboard to do those things, even more so after 6 years of doing the same activity over and over again.