1.Brainstorm a list of relevant keywords. Think about what your target audience is likely to search for on YouTube. You can also use YouTube's autocomplete feature to generate keyword ideas.
2.Use a YouTube keyword research tool. There are a number of free and paid tools available that can help you find more relevant and popular keywords. Some popular tools include:

• YouTube Keyword Tool
• Google Keyword Planner
• Ahrefs
• SEMrush
• vidIQ

3.Analyze your competitors' videos. Take a look at the videos that are ranking for your target keywords. What keywords are they using in their titles, descriptions, and tags?

4.Choose a mix of high-volume and low-volume keywords. High-volume keywords are more competitive, but they can also generate more views. Low-volume keywords are less competitive, but they may not generate as many views.

5.Create a keyword map. A keyword map is a way to organize your keywords into different categories. This can help you to create a more targeted and strategic content strategy.

Use long-tail keywords. Long-tail keywords are more specific and less competitive than short-tail keywords. For example, instead of targeting the keyword "cooking", target the keyword "how to make a grilled cheese sandwich".

Consider the search intent of your keywords. What are people trying to achieve when they search for a particular keyword? Are they looking for information, entertainment, or something else?

Use negative keywords. Negative keywords can help to prevent your videos from showing up for irrelevant search queries. For example, if you're creating a video about how to make a cake, you might want to add the negative keyword "dog" to prevent your video from showing up for search queries like "how to make a dog cake".

Once you have chosen your keywords, you can use them in your video titles, descriptions, and tags. You should also use them in your channel's keywords section. By using relevant keywords throughout your YouTube presence, you can help your videos to rank higher in search results and reach more viewers.