How to sign up services without phone number?

Hello all, recently wanted to signup for temporary permanent legit emailmid in gmail. It was asking me Phone number in process, i tried to use multiple numbers from regular online resources ( more than 30) but nothing worked. I don’t want to give my personal phone number in real life to someone’s unless Its I want to.

How do I sign up services where phone number is required ? Is there throw away phone number I can get ? Is there way to skip it all together ( not on Gmail for sure ) Your help be appreciated.