I don't know if it's a people who already have issues and have guns are more likely to use the gun instead of other means kind of statistic you have there

Well, you could easily figure that out by reading the link I sent. But I'll gladly clear it up for you: the statistic isn't about "likelihood of using gun for suicide", it's "likelihood of suicide". Men who own guns are 8x more likely to kill themselves than men who don't.

but owning a gun does not want to make you want to kill yourself purely by existing. It is a problem that exists regardless of the gun.

It is, but that doesn't mean you should ignore the statistics. Owning a gun dramatically increases your chances of suicide, mostly because it's the quickest method easily available. Suicide is extremely often an impulse. If you have a quick and easy method available, you're far more likely to commit suicide than if you don't. This has been researched for a long time.

And people who just... don't have a gun have a thousand different ways to accomplish the task. You aren't like, a healthy individual then get a gun and suddenly have .... urges.

Okay, so people with suicidal thoughts should just buy guns and go through with it, or what? I'll repeat myself: you don't just get help and are magically better the next day. Improving your mental state is a process that takes at the very least multiple years. Knowing yourself and statistics well enough to not give yourself an easy suicide method is good.