I went on Bumble BFF 1.5 years ago. I spoke with 4 women, met 2 of them in person, and they became my best friends. Sadly, I had to part ways with one of them last month, but that's a separate story on its own.
But then I've been struggling to find a partner online. After being on regular Bumble for 1.5 years and having a ton of negative and underwhelming experiences, including bad dates; I removed the app and met my boyfriend in real life a week later. So, I guess it's different for everyone. I'm usually super lucky with friends and not as lucky with relationships.