My jailbroken iPhone 4S is messed up

I did not like my jailbreaking experience so I wanted to unjailbreak it. Unfortunately, I do not have iTunes on my computer and could not restore it form there. I tried to reset my phone by erasing all content and settings on my phone ( i did this twice). But it didn't work and it made it to where I can't use Cydia, Safari, Game Center, Email, Maps and Youtube! I don't know if I should just rejailbreak it or not. Is that safe in my situation? If you know anything, or had this happen to you before, please help me! I don't want to mess up my phone even more!

Added (1). What If restoring doesn't work?

You're gonna have to download iTunes and restore it. Just back it up so you don't loose any of your stuff.
If you wanna try jailbreaking it again, go ahead. I personally wouldn't but yknow… Do whatever you feel is good

Before doing anything rash, go to the store and ask them to help you out with it. You could ruin your phone completely.

What I did was use a friends computer and connected it to iTunes. Then, press "Reset to factory settings". Give it at least 30 minutes and it should work.

If you have ios 6.1.3 there's only an untethered and semi untethered for iPhone 4S. Which means if you shut the phone off somehow the fetures you said will be lost. To get the fetures back you'll have to plug your iphone into the computer and open the jailbreaking tool you used and click "just boot" or "just boot tethered". Wait until an untethered jailbreak comes out. Then you won't have to worry about this.