I have seen many colleagues and scholars struggling to find updated panel data of COVID-19 cases, deaths and countries/territories, and myself too.

I realised one cite the European Centre for Disease Prevention and Control has collected and made public access to download in any format, based on the World Bank databases. The copyright policy ( https://www.ecdc.europa.eu/en/copyright) is suggested to follow.

Link: https://www.ecdc.europa.eu/en/publications-data/download-todays-data-geographic-distribution-covid-19-cases-worldwide

I found it useful to put it in excel or analyse through R.

I wish you all the best and thank you ECDC.