There is no need to open half a dozen browser tabs with different texture sites. 3DAssets.one is a search-engine which allows you to explore the largest free texture sites all at once. Simply find an asset and get redirected to the creator's website.
You can filter for certain asset types (materials, hdris, ...) and even for creation methods (photogrammetry, approximation, procedural generation, ...).
Every creator tags his/her work differently. 3DAssets.one automatically expands and unifies tags provided by creators to deal with plurals, synonyms and different spellings.
3D Model Haven3dmodelhaven.com
Kless Gyzen (sf)sketchfab.com/klessgyzen/models