To install Node.js 16 after uninstalling Node.js 18, you can use the NodeSource repository to get the specific version you want. Here’s a step-by-step guide using the terminal:

Remove the existing Node.js version

sudo apt remove nodejs

Install the NodeSource repository for Node.js 16

curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -

Install Node.js 16

sudo apt install -y nodejs

This will install Node.js 16 on your system. You can verify the installation by checking the version:

node -v

This should output the version of Node.js 16 that you just installed.