let's go bro. when i first started to work as an SDR at a company just to learn how to sell, i had seen so many yt videos about cold calling that i asked my founder if i can use a permission based opener. he said you can try it but i doesn't work. i thought "what does he know, let me try it out". turns out, he obviosuly knew more than me. those permission based openers did not work at all. most people did not hear the pitch and it was a waste of time. then i started using the script which we were supposed to, and i started booking 2 calls day. you don't even need to get fancy with openers. just a basic question works. then just tell them what problem you solve.