That doesn't prove your actual claims.  "...there is compelling evidence from other countries that show gun control like what I described does actually -reduce- gun violence. It -increases- the likelihood that criminals will be caught, and makes acquiring guns -more difficult-."

To prove a -reduction- in crime rates, increase in arrests, or decrease in access you can't just point to differences at a given point in time, you have to show both that, prior to the imposition of a given law, the pertinent rates were higher (lower) than after the law, -and- that if there was an extant decreasing trend, the particular law caused a statistically significant changed in the rate of that trend.

Similarly, to prove that registration works you have to show rates of compliance are statistically significant -and- that the registry has provided evidence that actually leads to (at least) an arrest.

Overall homicide and "gun violence" rates in those countries show no such stat sig changes from prior.