For instructions on how to install Lightroom presets in LR Classic (also known as LR7, LR8, or LR9) please visit:
http://photographypla.net/install-lightroom-presets/

For instructions on how to install Lightroom presets in LR4, LR5, or LR6 please visit:
https://photographypla.net/how-to-install-lightroom-presets-older-versions/

For instructions on how to install Lightroom presets in Lightroom CC please visit:
https://photographypla.net/how-to-install-presets-in-lightroom-cc/

For instructions on how to install presets in the Lightroom mobile app please visit:
https://photographypla.net/how-to-install-lightroom-mobile-presets/