Olivia Rodrigo has explained why she isn’t playing bigger venues on her ‘SOUR’ world tour next year after tickets swiftly sold out.The breakout pop star of 2021 announced a raft of tour dates for 2022 last week, including two shows at London’s 5,000-capacity Eventim Apollo.Some fans reported being in queues of 90,000 people for the tickets to Rodrigo’s dates across the UK, Europe and North America when they went on sale yesterday (December 10).