Before you buy again, see if you can refine your needs from a bike and research and weigh up that up for a pass/fail or a maybe.
High HP is needed really for the top end where high speed is the desired outcome where you are trying to pierce through the wall of wind. Bikes that are made with HP in mind will always have a lot of water radiator plus oil cooling radiators.
Hence bikes like the faired GSX-R Family are fitted with motor's typically as high end screamers. Hence the GSX-S storyline of 'retuned' for the road, where the top end HP is supposed to traded in for more lower down torque.
HP and Torque in a motor and like a sliding scale, your either at one place, but you can't be at both ends of the scale at the same time. That's where turbo's and superchargers come to the rescue.
I don't have the need for speed, but the GSX-S1000 has a lot more torque above 3000 RPM than the 750 can ever deliver, and in my old 2016 1000 I never had the need to explore (ride) past 4500.
My 750 is only starting to earn it's oats at 5000 RPM, so that's why a primary reason for me to return to the 1000 after 6 months of ownership of my 2019 750.
To continue on with it, for me, is only to depreciate it further. Your situation may be totally different, and seeing as it's your first bike, I would say stay with the 750 and further develop roadcraft skills that a good handling road bike can do for you before looking at the HP bikes.