I haven’t used FreeCAD before, but if it’s anything like inventor or fusion360, you might be able to edit the individual part and either reload that one part into the assembly or start a new assembly. Do you still have the .ipt file or equivalent for that one piece?
I had a 10th gen civic and loved it. Had I had more money a handful of years ago, I would have done a few upgrades to it.
If you have the 1.5L turbo engine that came on everything but the base model, you could upgrade the turbo and get a tune. That should put a bit more zip into it.
If you have the base model 2.0L, installing a turbo and all of the supporting mods on an NA vehicle is more expensive, time consuming, and frustrating for a first-timer. However, you could install an E85 kit to squeeze a bit more power out of it. Pair it with a tune and I bet you could get a bit past the 200hp mark.
These could be cheaper options than getting a similar car in a sport trim. However, I understand that modifying your daily driver can seem risky as well. If you’re mechanically inclined and feeling adventurous, I would encourage you to take a look at what upgrades can be done to your current car.