The revolver looks like a Spanish copy of a Smith
& Wesson Hand Ejector. From the looks, it looks as if the mainspring is broken, a simple replacement.
If the gun is otherwise in reasonable shape, no cracks of rust-through, it is fine with .32 S&W ammunition.
And, as to firing old guns, certainly caution should be observed, but many shooters at the range show up with old clunkers, and have a ball with them. A late friend of mine used to frequent pawn shops, and pick guns that had been there a long time, buying them with "I'll give you fifty dollars for that gun" or whatever he felt a bargain price would be. He showed up with some doozies!