Optimized Outlook 365 Storage Solution

I'm seeking assistance to set up an optimum storage configuration for my Outlook 365 which is linked to my Office 365 email account. Professionals with a deep understanding of Outlook 365 configurations will be most suited for this task.
need someone to come to the office in person ( no online help)

Requirements:
- Define and implement a suitable storage method based on my needs.
- Experience with various Outlook 365 storage alternatives preferred.
- Communicate in a non-techy, clear language.
- Should be able to complete the task promptly.

Looking forward to receiving your bids with relevant examples and timelines.