A batch script written for those who are not comfortable with command lines when downloading YouTube videos.

YouTube-DL_Batch_Script.bat

@echo off
echo Checking for update...
if exist youtube-dl.exe ( goto :computeSum ) else ( 
    echo It seems like you don't have youtube-dl on your computer. 
    goto :download 
)
:computeSum
setlocal enableextensions enabledelayedexpansion
set /a counter = 0
for /f "delims=" %%i in ('CertUtil -hashfile .\youtube-dl.exe SHA256') DO (
    set /a counter+=1
    if !counter!==2 (
        set hash1=%%i
    )
)
endlocal && set hash1=%hash1%
echo Downloading checksum file...
echo.
powershell -Command "Invoke-WebRequest https://github.com/yt-dlp/yt-dlp/releases/latest/download/SHA2-256SUMS -OutFile tmp.txt"
echo Finished!
echo.
setlocal enableextensions enabledelayedexpansion
set /a counter = 0
for /f "delims= " %%i in (tmp.txt) DO (
    set /a counter+=1
    if !counter!==2 (
        set hash2=%%i
    )
)
endlocal && set hash2=%hash2%
del tmp.txt
if %hash1%==%hash2% ( goto :youtubeDL ) else ( goto :download )
:download
echo Automatically downloading/upgrading youtube-dl.exe...
echo.
powershell -Command "Invoke-WebRequest https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe -OutFile youtube-dl.exe"
echo Finished!
echo.
:youtubeDL
set /p DIRECTORY=Where do you want to store your file (Enter a directory here, a directory should look something like C:\Users\Rick\xxx): 
echo.
:while
set /p URL=What is the link to the video: 
echo.
youtube-dl.exe -o "%DIRECTORY%\\%%(title)s.%%(ext)s" -f "bestvideo[ext=mp4]+bestaudio[ext=m4a]/mp4" "%URL%"
echo Download Complete!
set /p INPUT=Would you like to download more videos? (y/n): 
if "%INPUT%"=="y" (
    echo.
    goto :while
)

YouTube-DL_Batch_Script.sh

#!/bin/bash

computeSum() {
hash1=$(shasum -a 256 youtube-dl | cut -d " " -f 1)
echo Downloading checksum file...
echo
curl -sSL -o tmp.txt https://github.com/yt-dlp/yt-dlp/releases/latest/download/SHA2-256SUMS
echo Finished!
echo
hash2=$(grep 'yt-dlp$' tmp.txt | cut -d ' ' -f1)
rm tmp.txt
if [ "$hash1" = "$hash2" ]; then
youtubeDL
else
download
fi
}

download() {
echo Automatically downloading/upgrading youtube-dl...
echo
curl -sSL -o youtube-dl https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp
echo Finished!
echo
chmod +x youtube-dl
youtubeDL
}

youtubeDL() {
read -p "Where do you want to store your file (Enter a directory here, a directory should look something like /Users/xxx): " DIRECTORY
if [ -z "$DIRECTORY" ]; then
  DIRECTORY=$PWD
fi
while true; do
    read -p "What is the link to the video: " URL
    echo
    ./youtube-dl -o "$DIRECTORY/%(title)s.%(ext)s" -f "bestvideo[ext=mp4]+bestaudio[ext=m4a]/mp4" "$URL"
    echo Download Complete!
    read -p "Would you like to download more videos? (y/n): " INPUT
    echo
    if [ "$INPUT" != "y" ]; then
        break
    fi
done
}

echo Checking for update...
if [ -e youtube-dl ]; then
computeSum
else
echo "It seems like you don't have youtube-dl on your computer."
download
fi

A quick demonstration of how this works. If you have more questions feel free to comment below and I'm happy to help.

Updated to yt-dlp instead of youtube-dl since it's been years since they last updated their prebuilt binaries.

Added a shell script for Linux. Theoretically it also works on MacOS.
I'm honestly too lazy to rewrite this myself so I used ChatGPT, thus there could be bugs :p
Although... if you're using Linux, you probably don't need this lol.