Hello Sercan,
Thank you for reaching out about the difficulty signing in to your Microsoft account I understand how frustrating it can be when you’ve recently changed your password and cannot access your account especially when verification codes are not arriving. This situation can feel stressful because your email and phone are essential for recovery and not receiving codes makes it harder to regain access.
The most common reasons for this issue include incorrect recovery information, codes being filtered into spam or junk folders or temporary blocks due to multiple attempts. To resolve this please check your spam or junk folders for the verification email and confirm that your phone number and alternate email on file are correct. If you still cannot receive codes you can use the Microsoft Account Recovery Form and provide as much accurate information as possible such as previous passwords or recent email subjects. If you have other verification options like the Microsoft Authenticator app select “Other verification options” during sign-in. Also wait a few minutes before retrying if you’ve made multiple attempts as Microsoft may temporarily limit requests.
Can you confirm if you have access to any alternate recovery method such as an authenticator app or backup email?
I hope this answer is helpful if you have further questions feel free to reply back
Regards,
Marcelo