You can download it here but it is OpenSource project so you can also build it from source or using package manager:
yay -S fritzing
You might want to add some more modules to your project, here are some common libs:
Some tutorials are outdated, because it changed how you create custom parts some time ago. To do it now, you need to start with existing part (Core->IC, it has option to choose number of pins) And then you need to create new SVG. Whole App works based on SVG so you need to work with that.