Required watching to put things into perspective of how powerful gerrymandering can be https://youtube.com/watch?v=Lq-Y7crQo44

There was a proposed (and failed) ballot initiative in Ohio that tried to address this in the only way you actually can. The tl;dr is that there is no such thing as a fair map and so the state would be required to gerrymander the districts to match the state-wide election results. Basically proportional representation with extra steps, but brings the "secret metric" in map making to the forefront and requires it be a specific value so you can't tune it to your favor.