Perhaps you may or may not enjoy Space Asshole Red Faction: Guerilla. It’s a 2009 game that got a solid enough PC port that may run on weaker systems. There’s a remastered version but if you’re aiming for low-spec the original might be a better bet.
Anyway, it’s an open world set on Mars and you go around wreaking havoc and blowing up buildings with ahead-of-its-time physics/destruction mechanics. The combat is more like a shooter and you play with lots of explosives. It’s not a huge map by standards today but is a big enough playground to keep one occupied.
There’s definitely a learning curve to it but if you put the time and effort into it the trackpads can become second nature. I don’t really care for gyro but your mileage may vary. Take some time playing with the different setting adjustments to figure out what works best and then try to stick with those settings across different gamesto build up your muscle memory. Personally I find 175% sensitivity, trackball friction high, haptics off to be most comfortable. I started practicing with Amid Evil since its controls are quite basic, and moved up from there. Now I don’t even think about the controls and I recently enjoyed a full playthrough of Doom 2016 with no gyro or aim assist. Another approach that might help your coordination and fluency could be to spend time playing something highly mouse-centric like Torchlight, Titan Quest, FTL, etc. It’ll feel really clumsy trying to click around at first but after several hours it’ll probably start to feel more natural. As for the rest of your movement, I recommend setting up the back buttons for jump/crouch/walk/sprint so you don’t have to take your thumbs off the sticks/pads.