I would be happy to help you with your problem. However, I need more information from you. Could you please provide me with the following details:

• What is Metamask and what is it intended to achieve?

• You mentioned that you tried a tutorial on YouTube, but I couldn’t find that video. Can you copy and paste or provide the URL of the video you are using as a reference?

• What error message are you getting when you try to get test ETH from Rinkeby? Is it something specific (e.g. “Insufficient balance”, “Invalid address”, etc.)?

Once I have this information, I will be able to help you solve your problem to get test ETH on Metamask.

Also, please note that I will provide a generic solution and you can copy and paste the code into your Metamask wallet to check if it works for you. If not, we will have to dig deeper to find the problem.

Here’s what you can do:

• Check the error message: Take a close look at the error message you get when you try to get test ETH from Rinkeby. That will give me an idea of ​​what’s going on.

• Please provide more information about your code and wallet setup:

• Are you using a specific version of Solidity?

• Have you installed additional libraries or dependencies for Metamask or Web3.js?

• What is your ETH test balance address?

With this information I will do my best to help you solve the problem.