Hello,
The Recent list you see in OneDrive or Office is your personal history. It does not make your personal files visible to everyone in the group. Other people only see items they themselves opened or files that were shared with them. If colleagues are seeing your personal items, that usually means they are using the same Windows or Office sign in on the same PC.
Use one fix to both remove the entry now and stop this from happening again. Keep work and personal fully separated on this PC, then clear your Recents.
On the OneDrive sync client, select the OneDrive cloud icon near the clock. Choose Settings. Open the Accounts tab. If your personal OneDrive is listed, choose Unlink this PC for that personal account. This stops your personal files from being integrated into File Explorer and into some recent lists on this Windows profile.
In Office apps, open Word or Excel. Go to File > Account. Under User Information and Connected Services, remove your personal Microsoft account, then restart the Office apps. From now on, Recents in your work apps will only reflect work files.
To remove the specific item from Recent right now, do it where you are seeing it. In Office on your PC, open any Office app. File. Open. Recent. Right click the file name and choose Remove from list. On office.com, sign in with your work account. Open Recent. Select the three dots next to the file and choose Remove from list. If you pinned the file, unpin it first, then remove it.*
If the device itself is shared, the safest approach is to use separate Windows user accounts or at least separate Edge profiles for work and personal, and sign out when you finish. That preserves privacy and keeps Recents clean going forward.