I put master link on my bike and it keeps falling off the chain or snapping. The chain makes clicking noises or gets stuck then jumps off crank or the link snaps off. There's less than 5 miles on the chain is there any way to repair it without a chain tool? I've never used a snap on master link and usually use the traditional linking through pins.
Sounds like your chain is not suitable for the master link, or the master link is not closing right.
There's no need to use a master link if you prefer to use the more traditional pins. If you only ever take a chain off to change it, the advantages of a master link are not relevant.
Its possible to use sliding lockjaw pliers to push a pin in, but you run the risk of twisting it and making a poor seat. Buy a chain tool if you're serious about riding a bike, or ask around other riders who may have one already.
If you can provide more info on your master link (like a clear photo) then it may be obvious to the rest of us what is happening.