Instructions to Import to your Google Calendar - https://support.google.com/calendar/answer/37118?hl=en (section: Advanced: Create or edit CSV). Data provided here is already in CSV format, you can copy to Notepad & save with CSV file extension and then import.
Subject,Start Date,Start Time Esports Championships East Asia 2021 - KOR vs JPN,2021,9,10,11,00,2021,9,10,11,00 Esports Championships East Asia 2021 - JPN vs CHN,2021,9,10,12,00,2021,9,10,12,00 Esports Championships East Asia 2021 - CHN vs KOR,2021,9,11,10,00,2021,9,11,10,00 Esports Championships East Asia 2021 - CHN vs JPN,2021,9,11,11,00,2021,9,11,11,00 Esports Championships East Asia 2021 - KOR vs CHN,2021,9,11,12,00,2021,9,11,12,00 Esports Championships East Asia 2021 - JPN vs KOR,2021,9,11,13,00,2021,9,11,13,00 Esports Championships East Asia 2021 - CHN vs KOR,2021,9,12,09,30,2021,9,12,09,30