Clarium Texture Pack 1.17.1 → 1.19 / 1.20.+ [Free]

the author's original page

Clarium is an impressive realistic texture pack with some marvelous details, the author seems to take care of every bit of the block and makes it look phenomenal, that's why the texture pack is currently incomplete but the Patreon version includes a version with more blocks so buying it can be ideal, for now, it doesn't cover a massive chunk of blocks so you're not going to face as much lag as you'd face running other textures with the same or even fewer details than Clarium, so clearly it is a good choice for you.