Hi, I am facing a lot of problem using the Software app in my notebook laptop. Every time I want to remove or install some software it asks for a Password. This is real frustrating for very slow laptop like mine. How to fix this Issue and Install and Remove stuff more easily 
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Ubuntu Software manager contacts the application server every time you try to install or remove something from the software application, this requires the computer password. I accept this can get real frustrating in old laptops. But, you can use the terminal as it asks for the password only once 
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I am not really into linux 
and don't know how to install and remove application from there.
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You can use a search engine to search for the ubuntu code to install and remove a particular application
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Not finding anything in particular!
Can you please text the codes to install brave, vlc, idle, spotify, steam, snap, qbittorent and sql.
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To install Brave
sudo apt install apt-transport-https curl
sudo curl -fsSLo /usr/share/keyrings/brave-browser-archive-keyring.gpg https://brave-browser-apt-release.s3.brave.com/brave-browser-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main"|sudo tee /etc/apt/sources.list.d/brave-browser-release.list
sudo apt update
sudo apt install brave-browser
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For vlc
First install snap
$ sudo apt update
$ sudo apt install snapd
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then
sudo apt install VLC
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for idle
sudo apt install idle
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For spotify,
$ sudo snap install spotify
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for steam,
$ sudo add-apt-repository multiverse
$ sudo apt update
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then,
$ sudo apt install steam
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for qbittorent,
$ sudo apt update
$ sudo apt upgrade
$ sudo add-apt-repository ppa:qbittorrent-team/qbittorrent-stable
$ sudo apt update
$ sudo apt install qbittorrent
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for sql,
wget -qO- https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
sudo add-apt-repository "$(wget -qO- https://packages.microsoft.com/config/ubuntu/20.04/mssql-server-preview.list)"
sudo apt-get update
sudo apt-get install -y mssql-server
sudo /opt/mssql/bin/mssql-conf setup
systemctl status mssql-server --no-pager
sudo apt-get update
sudo apt install curl
curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
curl https://packages.microsoft.com/config/ubuntu/20.04/prod.list | sudo tee /etc/apt/sources.list.d/msprod.list
sudo apt-get update
sudo apt-get install mssql-tools unixodbc-dev
sudo apt-get update
sudo apt-get install mssql-tools
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
source ~/.bashrc
To Connect Locally
sqlcmd -S localhost -U sa -P '<YourPassword>'
CREATE DATABASE TestDB;
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I suppose that's everything
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I also wanted to remove the inbuilt apps like, Libre Office and Firefox.
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Remove Libre Office
sudo apt-get remove --purge libreoffice*
sudo apt-get clean
sudo apt-get autoremove
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Thank you very much For your Time 
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My Pleasure
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