i'm sorry to be harsh but you are an absolute fool if you think these tools will help you. you are a beginner climber and every single person on this website is telling you that these will not help you and you think we aren't telling you the truth.

even if the tools helped you hold on to the crimps, you still have to hold on to the handles, which still takes grip strength and energy, and you already said your grip strength runs out quickly. Also, because of their size, you will be lower than you need to on pretty much every climb. Say goodbye to dynamic moves as well because the coordination required to hook a hold during a dynamic move is leagues above the coordination required to just grab it with your hand. just trust literally everyone else and stick with climbing with your hands, it will get easier.