Factors for consideration when assessing whether a person can be readmitted to the UK as a returning resident under paragraph 19 of the Immigration Rules include:
• their strength of ties to the UK including:
o the nature of those ties
o the extent to which those ties have been maintained during the applicant’s absence
• the length of their original residence in the UK
• the length of time the applicant has been outside the UK
• the circumstances in which they left the UK and their reasons for remaining absent
• their reasons for now wishing to return
• whether, if they were to be readmitted, they would continue to live in the UK
• any other compelling or compassionate factors
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/725471/returning-residents-v2.pdf#page10
Without knowing the answers to some of the above, where you and your children currently reside, their age/current schooling, other ties to the UK etc, it’s hard to judge whether having two children with UK citizenship who want to return could be deemed sufficient in and of itself.