Search the internet to be completely overwhelmed by the number of free block patterns, but here are a few to get you started:

https://www.generations-quilt-patterns.com/free-quilt-block-patterns.html#FreeQuiltBlockPatternsLibrary

https://www.patchworksquare.com/

https://www.quiltingdaily.com/150-free-quilt-block-patterns-and-inspiration-from-mccallsquilting-com/

https://www.allpeoplequilt.com/quilt-patterns/quilt-blocks/free-12-quilt-block-patterns