Pressfit BB shimano crankset

Hi i currently have the Cube Attain sl – Shimano 105 FC-5800 – 172.5mm – It makes a dreadful squeaking noise when putting effort on the pedal stroke, especially while climbing and is at it worst when on the small chain ring at the front – i have tried to eliminate it via looking at other issues, but i am 99% certain it is the BB – I have looked on some facebook groups and many have made some suggestions, such as the praxis works BB (but there a few and i am unsure which i need) also someone mentioned the “wheels manufacturing BB” and again there seems to be different types and i am unsure which i would really need.

Could anyone please help with the purchase of the correct BB – From those two models please??

Thanks very much.