Cannot open Yahoo email, changed mobile number

Hi Team,

I badly need your help re-accessing my account. I know my yahoo sign in and my password, the thing is I can't go through since I lost my mobile number linked to my email and I can't also recall if I have recovery email since my account is always signed in through my phone. Thing is, my phone broke plus I changed my number so there's no way for me to open my account from other device. I am so helpless. Your options for recovery isn't helping.

Will appreciate your response.

Regards,
Cate