How can I use two TP4056 with two li-ion batteries, but single load?
Don't.
Just use one TP4056 and connect both cells in parallel after balancing them first. Don't connect batteries with more than 0.2V difference in parallel as this can risk fire and explosions (excessive charging current from one to another).
This will work because Lithium cells have a wide voltage range.
So when connected in parallel they will self-balance.
the TP4065 module includes over-discharge protection circuitry power should be taken from the out terminals of the TP4056 module, not directly from the battery.