Actually suicide rates at gun ranges are high. Lots of ranges won’t rent a gun to a single person who they don’t know.
Actually, I’ve been active with guns for decades. I can’t think of a single case where a suicide was committed in a gun range. I know ranges are inquisitive about new shooters to their range and want to know if they know about safety etc. but I also haven’t seen anyone who’s willing to answer questions and fill out paperwork refused, either.
I’m not saying I don’t believe you - I just have not seen or heard of it until now. The only way I can see this being the case if the suicidee doesn’t own a gun and goes to a range to rent one to shoot. If I owned a weapon and wanted to off myself, I’d do it in the comfort of my home.