To register a domain name, it must suddenly become popular or someone else's domain name must expire:
Determine the domain name you want to register and check if it is available.
You can use a WHOIS lookup tool to check if the domain name has been registered. Usually, only the quick ones won't be snatched.
If you find that the domain name has already been registered but you still want it, you can try contacting the current owner to see if they are willing to sell it.
You can find the owner's contact information through a WHOIS lookup tool, and they may ask for a high price.
If the owner is unwilling to sell the domain name or you cannot contact them, you can try using a domain name bidding platform or auction website to purchase the domain name.
These platforms and websites can help you contact the domain name owner and provide a bidding or auction method to purchase the domain name.
If all of the above methods fail, you can consider choosing a similar domain name or adding other words to create a new domain name.
Or you can patiently wait for the domain name to expire and then snatch it.