Yeah don’t let this stop you! If you do the side project for fun and/or learning, just go ahead and build stuff. Don’t look at other projects too soon so you give space to your own creativity. But perhaps compare stuff in a later stage.
give space to your own creativity
This is key. One will inevitably make many different design and UX decisions vs whatever preexisting projects are out there, making one’s project more suited to at least a few contexts than anything preexisting.
In addition to being plain demotivating, looking at other stuff too early basically encourages one to just make the same decisions as others, becoming much more like just a second implementation of what already exists.
Someday people might look at your project and become demotivated at their own, and the cycle continues
