Fear is a tool. Use it appropriately.
For instance, there is as much evidence for fire breathing dragons as there is for hell. I bet you are not afraid of fire breathing dragons though.
Fear is a great tool to use around, say, a golden lancehead snake, or a maniac with a gun, or a drunk driver. These things actually exist. Being fearful of them can keep you alive.
Instead of using fear to think about a hell, try using a more appropriate tool like skeptical thinking.
Being fearful of something for which there is no evidence is like using a chainsaw to cook a steak. It’s the wrong tool to use for the job.