You’re asking a very important question, especially if you’re new to the UK market. I had the same confusion and decided to look into real UK job interview statistics instead of relying on assumptions. This page was extremely helpful
https://moderncv.co.uk/uk-job-interview-statistics It clearly explains interview success rate data and shows that attending several job interviews before receiving an offer is completely normal in the UK. In my own experience, I went through multiple interview stages across different companies before finally getting hired. Understanding the statistics helped me adjust my expectations and see interviews as part of a longer journey rather than a series of personal failures.