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 A1 Gaming League 2021 Grand Finals - 6 CO vs BYLB,2021,6,02,16,30,2021,6,02,16,30 A1 Gaming League 2021 Grand Finals - R5 vs DNWU,2021,6,04,16,30,2021,6,04,16,30 A1 Gaming League 2021 Grand Finals - BYLB vs DNWU,2021,6,05,16,00,2021,6,05,16,00 A1 Gaming League 2021 Grand Finals - 6 CO vs R5,2021,6,06,14,00,2021,6,06,14,00