What’s the state of going cashless / contactless payment in the UK?

Hello there! I will be moving to Edinburgh. Super excited as it seems so much is good about the city (I’m coming from Seattle/US). What’s the state of cash / contactless payment like in UK overall / Edinburgh? Can I go whole days or weeks without using cash (especially those pesky coins) whatsoever? Besides phone NFC (Apple Pay / Android Wallets), is there a easy to charge contactless payment for buses and stuff? Actually can you use phone NFC for public transport? Thanks in advance!