Ensure any of the flow logs aren't filling up with message, since that usually means the flow is running
continuously, please read:
Check that the fiber count, i.e. the number with in the cog icon and after the STOP button isn't ever increasing, since that means the flow is using the Fork block incorrectly.
Ensure a flow isn't accumulating more and more data in it's variables, since that might cause the internal database to fail once it's binary data size limit is reached.
Ensure a flow isn't send a lot of data in it's intents, e.g. lots of extras. This also includes Dialog blocks
, e.g. very long text or lots of choices, since they are rely on intents as well.
With every new release Google makes using a service running in the background more and more difficult, and unreliable since they keep on adding edge-cases where such a service is not allowed.
Is any of the flows using the Interact block?
If not, then try enabling the Automate accessibility service since the system should consider those more important so less likely to kill it.