Google Ads Optimization Help

Hey, I am under heavy load with google ads optimization and I need fresh ideas on how to approach several of my projects. In order to push the efficiency of my accounts I need your up-to date deep insight into the adwords mechanics. Particularly, I am running a set of pmax, shopping and brand search campaigns that work very well for more than a year. Starting ROAS was somewhere at 200% when I took control of the account, but today we're talking ~800% monthly ROAS. My next goal is 1000% ROAS and the feeling is that I'm on the edge of my knowledge and skills how to approach this scale up. Project is interesting, I am very detailed with my diary, contextualization, ideas, experiments and everything that Google suggests. I need a fresh perspective, fresh ideas to test in my Experiments. You'll get a detailed work diary, a description of my strategy, my work dynamic and I will be very happy with one to three ideas to test in my future experiments there. I am looking forward learning from you. Thank you for your consideration, Aleks