Violence was a thing before guns existed. If I got stabbed I’m not going to think, “Thank goodness I wasn’t shot.” I suppose I’ll have plenty of to think about it while waiting for the cops to show up though.
Cherry picking and a lack of controling for confounding variables is an issue when people try to make the claim you did. There is also a lot more going on than just gun laws. When normal people don’t benefit from our GDP it really isn’t a good benchmark for comparable countries. When people have a lack opportunities or lack social programs there will probably be some social problems.
That is a different statement. It’s saying abusers can be more dangerous with a weapon. It does not follow that people who own a weapon are somehow more likely to be an abuser.
To make that argument it would need to say something about what percentage of gun owners commit abuse or some kind violent crime.
You can find higher rates of domestic violence among cops for instance so maybe you could argue cops are more likely to be abusers.