(Sorry not trying to be a dick just some info)

Drop that taser, they're worthless. The ones the cops use are only effective 60% of the time, and those are the shooty bois with the barbs that aren't legal for civilians in every state (some states OK). The ones most people have that are only effective at contact distance anyway are basically just annoying, it's impossible to get intramuscular incapacitation with them afaik, as that requires appropriate prong spread that is only a thing with the shooty bois (if you're the right distance away to get the spread, and the guy doesn't have a heavy coat which half the time will catch the barbs.) Frankly running, OC, or if the threat is deadly a hammer, would all be better than the taser unless you're fighting a lot of naked wet dudes maybe lol.

The OC spray is great however, get the highest % you legally can in your area and preferably stream over gel. They do go bad, check the dates on it, if no date replace at least every ~2y. I use Pom OC myself, but there's many others.

A gun is not a tool you need. It is just needed because you expect others to also have it.

Against random robberies, pepperspray, tasers or sirens are better.

If "the woman at night on the walk home" has a gun, "the robber" has one too. Nothing won.

If it is circulating, you cannot prevent the wrong people from getting them.

I see how not only the police having guns is nice. But this means they shoot way quicker. See the rate of deaths by police in germany, its always below 30.