1- Open MetaMask
2 - At the top of the application you will see at the top, a small section showing your currently connected network (commonly Ethereum Mainnet)
3 - Click the dropdown menu and at the bottom you will see "Add network"
4 - Once the new window opens there will be a selection of details that need to be inputted.
Network Name - Bitgert Mainnet
New RPC URL - https://rpc.icecreamswap.com/ - https://rpc-bitgert-vefi.com/ - https://mainnet-rpc-brisescan.com/ (please select one of the URL's and DO NOT input all of them)
Chain ID - 32520
Currency Symbol - Brise
Block Explorer URL - https://brisescan.com/
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5 - Once all of the information has been inputted simply click save and your MetaMask will connect to the chosen RPC settings you defined
6 - Your all done and welcome to the Bitgert chain. Please note you wouldn't need to generate a new wallet and most EVM chains use the same wallet address for multiple chains.