Blender can freeze when you're using it, which can make you want to give up on using it. There are a few reasons why this can happen. One of the most common reasons is that the computer you're using it on is low on memory. If you're using a laptop or tablet, you might need to close a bunch of apps to make space for blender. Another reason is that the processor in your computer is running at a low level. If your processor is low, you can't keep up with the load blender is putting on it. If this is the case, you should consider upgrading your processor to a faster one.