Use wget to download the latest XAMPP from https://www.apachefriends.org/index.html.

wget https://www.apachefriends.org/xampp-files/8.1.2/xampp-linux-x64-8.1.2-0-installer.run

And then make the installation package executable.

sudo chmod 755 xampp-linux-x64-8.1.2-0-installer.run

And here, you have to confirm execute permission.

ls -l xampp-linux-x64-8.1.2-0-installer.run

Conduct to launch the Setup Wizard.

sudo ./xampp-linux-x64-8.1.2-0-installer.run

When properly the graphical setup wizard opens, let's go step by step to install XAMPP. Now, what you need to aunch XAMPP through the Terminal.

sudo /opt/lampp/lampp start