arduino library's

I downloaded library’s from GitHub but i tried to add it to my library’s and us it but i can’t find it in the library manager. Did i do semothing wrong.

this is the link of the library’s: GitHub - adafruit/Adafruit_NeoPixel: Arduino library for controlling single-wire LED pixels (NeoPixel, WS2812, etc.)
https://github.com/FortySevenEffects/arduino_midi_library

No need to start a new thread.. Look at this: https://www.arduino.cc/en/Guide/Libraries

You cannot use NeoPixels while reading MIDI input.

Many other users have posted about this problem: MIDI react LED using Arduino. (but im really stuck) Serial Transfer Problem - Data is Lost LED Strip for Digital MIDI Piano

Also, please don't cross-post, use one thread per problem.

Pieter