Is it safe to workout without Gym Gloves ?

Lots of people don't use gloves. It's a matter of preference. For people prone to sweaty hands, gloves can help keep their hands from being so slippery (better grip) and provide some level of protection from developing callouses.

As for what kind to choose, I can be of no help. The pair I purchased a few years ago at a discount store, weren't very comfortable and don't wear them.

Safe, yes. It's perfectly safe. Having gloves is not "safer".

Gloves offers a tiny bit more grip, but not much, since grip depends mostly on the strength of your fingers and forearms.

The main advantage they have is actually to prevent cornification of your hands (probably it's what you mean by "getting hard"), which can be a bit annoying, sometimes a bit painful, and which is not very pretty.

of course it is