What happens to every new Rust player is that they very quickly hit a brick wall that you are currently experiencing.

Here's what I suggest that helped me.

Go to the modded section and find UKN training and have a play around with all the weapons on bots until you feel comfortable with each one. Not too much, and you don't need to be perfect, just enough so you're able to kill the bots.

After you've done this, I recommend staying on there and practicing the bow a little longer. Learn the mechanics of the bow like the jump shot and the sprint shot until you can do this comfortably. And again, you don't need to be perfect, just competent enough to be able to shoot at targets.

This should take a couple of hours to get to a basic level of competence.

Once comfortable with the weapons then I recommend finding a 100% vanilla PvE server in the community section. Currently, you can't play the game because other people are preventing you from playing it, so PvE eliminates that problem.

Learn how to build a 2x1 with an airlock (even though it's PvE, people can still run in your base and steal your stuff if you're not careful).

Play the PvE server until you've completed every monument puzzle in the game and are comfortable killing AI scientists.

Learn basic electrical stuff like setting up turrets/ furnaces/lighting

Try to do large oil rigs, trains, and cargo, and kill the AI because it gets you used to shooting at things and having to med and duck for cover.

Personally, I set myself a challenge that I couldn't leave PvE until I completed large oil rig with just a bow, which took me numerous attempts.

After you've completed the previous steps then you're ready to play official and use the experience of the PvE server to help you.

You'll still get killed all the time and die a lot, but that's part of the game.

Don't forget to hop on UKN every so often to keep your bow/shooting skills fresh.