Cylance is quite bad with false negatives IMO and there's been a lot of complaints about it. If you have an FP with Cylance, there's red and yellow tape you have to cut through as a developer to get it fixed. Sometimes, people have only had FPs fixed after complaining about it on Reddit in which a Cylance employee would see it and then help the developer fix it.How does Cylance deals with false negatives? Wait 6 months to a new model update seems to be too much.
You have to compromise though. Cylance relies on ML for the most part but they do have signatures for many things and a normal white-list. Due to the nature of ML, if your application triggers it, it's going to be flagged unless it's on a white-list. Cylance do not mean to intentionally flag safe applications.
Cylance Smart AV lacks in a lot of areas but it's a decent companion to something else. By companion, I mean it's fine to run it alongside an ad-blocker. There's no need to go over-the-top with security as a home user. It provides bare essential scanning and it does an integrity check on system files to help make sure they haven't been modified by anyone, which is a nice feature that not a lot of AV software does nowadays. It doesn't come with anything to help with stopping malware from propagating across a network, like a firewall, though - you could always use Windows Firewall which has improved a lot over the years. IIRC, Cylance Smart AV used to lack with the ability to handle WOW64 processes (or it was CylancePROTECT) but this may have since changed.