change to pressfit

hi all
I have a lapierre edge 827+ which runs a press fit ( im not sure what) BB after a few hundred milles this now sounds and feels like it full off sand / grit / mud I removed the crank and cleaned but it's definitely the bearings.

i'm back to the world of mtb after 10 years so things have changed and im not sure what my options are for replacing it I've seen a FSA threaded adaptor and wondered if this would work of it id need to change my crank etc. to run this