If you have tools that you don’t know how to use or don’t feel confident using, then they’re basically going to be useless to you during an emergency or disaster.
A ‘tool’ doesn’t have to be a physical object, either. It could be a skill, such as fire making. If you’re not that comfortable making fires, then I would highly suggest doing everything you can to learn fire making better to get more confident. When the time comes to make a fire in a variety of situations, then you’ll have the knowledge to do it as quickly and effectively as you can.
During an emergency or disaster, you don’t want to be fumbling around trying to figure out that particular tool because you’ve never practiced with it before. Time and heightened stress will be your enemies during an emergency situation.