Issues with One Drive on Mac

Hi

Recently One Drive stopped working on my mac with a repeated pop up saying it was broken. I reinstalled it and I'm still having issues. I have around 250gb of files stored in there but most of that is photo back up. 

I am a freelancer and I have always worked straight out of One Drive folders on my mac, so I know it's backed up in the cloud and I can access it elsewhere if I need to. However since the update and syncing etc it's not working as it was. 

I don't want to download all of my files to my mac as I only need two folders that contain all the stuff I regularly work on and I don't have space for all of it. I've tried ctrl clicking on these folders to keep them on my device but that then triggers a pop up to say the device couldn't connect to the server. The wifi etc is fine. 

If I go into One Drive preferences it then says it can't locate my 'Personal' folder (cue panic as this is where all the photos are stored) but when I go online it is all there. 

Can anyone help me solve this? I had an email recently saying the price of office was going up a LOT recently which I resent as I can't even get this to work as it was. I really don't want to uninstall again if I can help it as One Drive is just trying to sync all the time and using up so much CPU. 

Thanks

Faye