If I downgrade to the FREE subscription will I loose my information??

No. You will still have your account Active and all your data available.

The only difference when downgraded to FREE plan is that you will now have lesser allocations (i.e. submissions, storage space, payments) compared to the paid plans (i.e your current BRONZE plan)

You can check for more details here https://www.jotform.com/pricing

Let us know if you need further assistance.