The most important thing for tomato plants is having stem support which is very necessary, because support for tomato plants will actually play a very important role so that the plants do not break and fall easily.
Moreover, when the tomato plant already has dense fruit, it will be very vulnerable to the tomato tree falling to the ground and causing the tomatoes to fall off the stem.
For each tomato plant, one or two supports must be used that suit the plant and its needs, this is best provided before the tomato plant has heavy fruit.
Even though it seems very troublesome, this is the most important thing to pay attention to for the safety of the tomato plants themselves.
regards
@agil04