After reinstallation OneDrive, the backup cannot be made due to another cloud service in Windows 11?

Hello everyone,

I'm a Dutch Windows 11 user with the following problem:

• Since one of my Microsoft accounts has been disabled for private usage on my home pc I removed that account and it's folder from my local userprofile in Windows.
  Note: There was no other way removing it since I could not logon anymore.
• Even before that account was disabled the Explorer in Windows 11 is extremely slow. Taking about 30 seconds to open or browse files and folders.
  I found multiple people describing this issue on the internet.
• I tried running: "OneDrive.exe /reset" (as mentioned in the https://support.microsoft.com/en-us/office/reset-onedrive-34701e00-bf7b-42db-b960-84905399050c) to fix this problem with no result.
• I also tried running "wsreset.exe" (https://support.microsoft.com/nl-nl/office/onedrive-opnieuw-instellen-34701e00-bf7b-42db-b960-84905399050c?WT.mc_id=365AdminCSH_Smc) also with no result.
• At last I removed OneDrive from my pc. Deinstalling it, then rebooted my pc and reinstalled it.
• That resulted in the following (from Dutch translated) error:
  "Your Pictures folder in OneDrive can't be backed up because it contains other cloud storage. Disable cloud service syncing in this folder and try again."
  Dutch error: "Er kan geen back-up worden gemaakt van uw afbeeldingen-map in OneDrive omdat deze een andere cloudopslag bevat. Schakel de cloudservice synchronisatie in deze map uit en probeer het opnieuw".
• Since there seemed no way to remove the 'other' cloudservice. Hey I removed OneDrive to install it again.
  I decided to remove OneDrive agian from my pc by deinstalling it.
• After rebooting my pc I also removed all OneDrive foders from my %UserProfile% (I have a back-up on USB), then reinstalling OneDrive.
• You might guessed it, and yes your right I got the same error again!

Apparently there is no supportpage on this error so I post it here. Maybe someone here knows it and can provide me with a solution?

Thanks in advance!

PS.

• I also have Apple's iCloud running on my pc, I also removed and reinstalled that program without problem thinking it might be the "other cloudservice" mentioned in the error.
• I use OneDrive for bussiness (School-Microsoft-account) this error I get is on my personal (non-bussiness) MS-account.