It’s not easy, either, unless you have some practice. Before you start digging in to a pile of connectors, crimp terminals, and wire, it’s a good idea to know what you’re getting into and ...
The price tag for ‘saving a buck’ may end up being a lot higher ... using a disgustingly cheap crimping tool that positively mauls the connector and/or wire.
Also, toward the end of the crimping motion ... often try to find a single tool for multiple applications like crimping wire connectors of all sizes. It’s perfectly understandable as it helps ...