I experimented last year using smaller pots and treating 'em mean. Had a great harvest
tkapelko - can you offer a bit more info? Are the plants indoors or out for instance. Weather can cause damage. Curling is quite normal - up to a point - some leaves will naturally wither away and you can remove them. Overcrowding can be an issue - is there plenty of airflow round your plants? If in pots, they will need more water than outdoors and make sure there's loads of ventilation.
A pic would be great if you can manage. Click on the oak tree icon in the toolbar above where you post. It doesn't appear on some devices and phones though.
Once the flowers are open, mist the tomato plants with tepid water every now and then. This helps the fruit to set.
As far as I know from my own experience, tumbler toms can be grown in a large pot - some even say you can do them in a hanging basket.
All you need to be aware of is that toms of any description are hungry plants - the tumbling ones grow prolifically and you will get a poor harvest if you cram too many plants in one pot/basket or WHY.
The bigger the pot, the better. Don't overfeed or overwater as this tends to ruin their flavour. The tumblers are no different from other types really but they do require the depth to get their feet in so to speak. After that, treat them mean and keep them keen....you may reduce the number of fruits that way but at least they taste like real tomatoes should