Enable scrolling using hot key and left mouse button

I have a Logitech M705 (marathon performance plus) mouse, plus the MK 710 Keyboard, I use Logi Options on macOS Big Sur and Mojave (2 separate macs). Recently I started to have pains on my hand /wrist and correlate them to be using frequently the Middle mouse button to scroll through many tools such as IDEs and Chrome. I want to be able to push a hot key – such as Alt (= ⌥ option) – and to enable scrolling by (left button) clicking and dragging the mouse to any direction of the screen. Is this achievable? *Ideally I would like to avoid writing scripts or install 3rd-party tools, but I'm open if there is no other choice*