My suggestion is to start practicing. You can't get good or great at it or better at it without practice. In practicing you want to make setting an instinct, not a chore or omg the ball is coming what do I do?
You want to be able to know where you need to be. You need to move fast. Setting is probably the number one spot. If you are a setter you are invaluable to most teams. As you state not everyone can do it. You have the whole rest of the spring and summer left to practice. I would sign up for a league, or any volleyball training you can get. There may be summer volleyball camps you can sign up for and maybe even intramural teams you can practice/play on. You need to learn and be comfortable with the skill of setting to be extremely effective. Otherwise what you see is what you get until that ability is learned or the skill is obtained from practicing. As with any position, hitters, blockers, defensive and offensive they need to know what they are doing too. But you can't worry about what your other teammates can/can't do nor what their skill level is. All you can do is tell them to Pass the ball to you and be where you are supposed to be. If they can't get it there, then you need to get to it.
So you need to pay attention at all times where that ball is at. Knowing that they may lack the skill to get it to you. You will also need to learn how to get that ball to the net so your hitters can hit. If you can't, you will be ineffective and of no use. The other option is to learn to bump set it if the ball is at an awkward position or place for you to set it. Also talk to your teammates and coaches to see if you guys can practice more. Or what pointers they can give you to help you get better.
Alternatively there's Youtube videos, just search how to set a volleyball that can demonstrate some techniques on setting the ball.
As far as 'slapping' sound of a volleyball, you'll need to learn to be lighter with the fingertips, do not swat at the ball but cradle the ball with your fingertips pushing off the ball with those fingertips will help lessen the sound. And even to the point where there should be literally almost no sound (or at least not the slapping sound).
Jump setting is not necessary. I used to do it and still do when I implement my skills. But a lot of it is practice... you need to learn to meet the ball in the air above your head. Sometimes jump setting gives you a boost to get to an awkward bumped ball. But certainly not a necessity if you can get underneath the ball. Certainly you will want to use your legs to push up and help reinforce those arms and fingertips.
I wish you the best of luck.
Remember PRACTICE is key. And also builds up instinct. Practice practice practice. If worse comes to worse and you can't join a league or find a summer camp to join, you will want to get your own volleyball if you don't have one and practice. Practice off the garage door, outside, in the yard, or at a park etc. But you certainly should try and get some play time on a regular team to improve your ability to get the ball to the right spot and how to get to a ball when it is not passed appropriately to you. That 2nd ball is almost always yours. Go GET IT!