MacBook Pro running slow
My MacBook Pro, purchased in 2020, has been running extremely slow lately. It often takes minutes for a site to load, to the point that while I wait I'll switch to reading mail, working on a Pages document, or even stepping away from the computer for 5 or 10 minutes. It has 16GB of memory and runs Sequoia 15.3.2. I think there's still plenty of memory, and although I've been more diligent lately at deleting documents, editing my photos, searching for unneeded old apps, etc., I don't think that's the problem. I don't want to delete something I'd like to keep, even if it's not crucial, if that isn't what's behind this slowdown. Is my Mac simply too old to handle the latest OS or perform efficiently? Are there some strategies I could try to help at least somewhat?
MacBook Pro 13″, macOS 15.3