Yes GrapheneOS is good check out the features page and have a good read of the Usage and FAQ pages at grapheneos.org then if you have further questions requiring a hands on, daily driver experience from a user then hit me up.

Look forward to hearing from you both.

PS Dont forget that Lineage OS uses Google Services by default at the system level. It is not a 'degoogled' OS (common parlance misnomer but I know what you mean) regardless of GApps or MicroG being present.