You sounded reasonable in the beginning...now, you are beginning to sound like a propaganda bot that isn't able to directly engage in a reasonable conversation.
First off...if you aren't from the US, then how is it you have so much experience of the operation of our communities that you feel you are qualified to offer suggestions as to how to fix things? Your opinions are based on generic observations and principles and are not specifically applicable. Unless you have a greater depth of the functions of the US Republic system of government...you should probably refrain preaching your solutions to the problems.
Second...I don't trust the US government, not any other government that currently exists or any government that has ever existed. You are a fool if you trust your government. History shows that all governments will eventually become corrupt and fail.
Lastly...You are mostly correct that not much has been done to address gun violence...that is partially because people keep focusing on the gun and not the real source of the problem. But it is also because, gun violence is minor compared to what actually causes the deaths each year. Cars, Doctors, and falling each kill more people that guns each year...yet guns prevent more people from getting hurt than all of those combined.
This is my last post on this subject with you.
RE: Reality Check: Trump Did Not Make It Easier for Severely Mentally Ill People To Buy Guns