Problem with "To Sphere"

[SgtFury]

Hello lads, I am new here.
I have problem with making a holes into bowling ball.
If I want to transfer a my mash to a circle i can not do it. First hole is fine, but …
Please can you help me anyone?

[Ferdi]

Hi,

you have turned on ‘Proportional Editing Mode’ Tap ‘o’ (that’s ‘Oww’, rather than ‘zero’). You see next to the pictos where you choose vertex, edge or faces a small blue or grey ball. Make sure it is grey (disabled).

Cheers