You'll need to have at least one of your account recovery information (i.e email / username / phone number, if set up) to regain access to your account. Here's an additional guide that may help you (it covers more scenarios): https://goo.gl/q2Ijwz . Hope it helps!
@TeamYouTube I’ve been trying to sign in into my account but I cannot due to my recovery email and recovery phone number and it shows the the last 2 digits of a phone that I don’t recognize
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Is there a way to change the recovery number because the one that supposedly is on my gmail is not the right phone number
End of conversation
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