Thanks for the link. According to that applications with absences over 900 are unlikely to be accepted. Found another link mentioning pandemic but it is relevant for absences below 900 https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1032568 ...

Thanks for your reply. Do you think I could ask HM to exercise discretion due pandemic in this case?

I first come into the UK in April 2013. I've got ILR under the Settlement Scheme since Jan 2020. Previously I held the Permanent Residence acquired in April 2018 after 5 years continuous residence. I'm considering apply for the British Citizenship but I have over 900 absences in the last 5 years ...