Zoom’s Meeting SDK isn’t designed for multiple concurrent “instances” sharing the same machine state: it even defines SDKERR_OTHER_SDK_INSTANCE_RUNNING, and Zoom staff have called multi-instance workarounds (like sdkPathPostfix) unsupportedand subject to breaking on upgrades.
For something you can rely on, you’ll need to isolate each bot in its own container/VM (or separate host) so the SDK’s local files don’t collide.
You could also consider using a Meeting Bot API or Desktop Recording SDK from Recall.ai, depending on whether you want bot-join or on-device capture.