I created a library with free AI seamless textures for everything
Creating Seamless Tileable Textures in Photoshop
How to create seamless texture for any 3D software, Fast method
Create a Japanese Wave or Fan Shape Reusable Seamless Pattern
Make Any Texture Seamless with Generative Fill
How To Make A Seamless Texture in Photoshop (Redux) — Medialoot
How to create Seamless Pattern Swatch from Photo in Photoshop or Illustrator
Photoshop Elements Tutorial - Lesson 184 - Highpass, Maximum and Minimum Filters
Seamless Photo Blending with Photoshop's Generative Fill
TileMe. Make any texture seamless inside Unity + Texture generator
Free Seamless Texture Generator