Degraded Storage Pool 1

[Enquiries]

I have had a Synology for years: DS214 play.
There are a few issues and I'm not sure how to proceed. Any help would be great!
I am gettting a message that my Storage Pool 1 is degraded.
When I went into Storage Manager on the HDD/SDD tab I'm told that Drive 1 and Drive 2 are both "Healthy".
On the Volume tab, I am told Volume 1 is "degraded". And I only have one volume.
On the Oveview tab, it originally told me I had, 2 drives - but one of them was "not initiated".
I have since tried to follow instructions to initiate drive 2. I have done this BUT I notice Drive 1 has RAID 1 and Drive 2 has BASIC RAID type. Not sure what this means.
I want to have Drive 2 setup as mirror of Drive 1.
But Drive 1 has degraded Storage Pool.
Drive 2 looks healthy, but has 557 bad sectors.
Do I need to setup a volume on Drive 2/ Storage Pool 2. How?
Do I need to replace both drives due to being degraded/ bad sectors?
How do I mirror Drive 1 to Drive 2?
Any help would be great? Thanks

[ed]

Basic mode means that you have no raid. Each drive has its own volume.
You should be able to convert the RAID https://kb.synology.com/en-au/DSM/help/D...?version=7
I would first recommend backing up all data you have.