You can use some domain names generators such as namemesh (already suggested by joniboini), namestall, domainnamesoup... all you have to do is to provide some keywords and they will generate free related domain names. At least they will give you some cool ideas.
But keep in mind that your website popularity doesn't depend on it's url but on the content you provide and a cool name won't improve your ranking on search engines. So don't waste too much time on it.
Tbh, i've been all day searching a good domain name on those sites godaddy etc. but most importantly what i notice was someone from Panama grabbed all domains that started with crypto for example cryptobeginner, cryptohelp.com and hundreds of domains that started with crypto. Yes you're correct i agree that you said
website popularity doesn't depend on it's url but on the content [/ b] but i'm type of person that likes short good looking-eye domain then content it's something that i love to do everyday.
Thanks for your comment