Probably not. You are more likely to be killed by a lightning strike or a bee sting than by a shark attack. Attacks are extremely rare and most are not life-threatening.
Sharks attack about 50-75 people each year worldwide and cause around eight deaths. But that's a very, very low number compared to the hundreds of millions of hours that humans spend swimming in the sea.
Many of the deaths an injuries could have been avoided by following simple rules that reduce the risks from sharks. If anyone should be scared it's actually the sharks. Every year humans kill millions of them for their fins, meat and skin. Some species are now close to extinction because of hunting.