They are pretty small pots and if you eat only one per day – or fewer – that's probably okay. Alternatively, if you buy one of the big pots, give yourself smallish servings each time – and no more than one a day. You don't need stuff to keep your gut healthy unless you have serious digestive problems or have recently had a major course of antibiotics. Gut bacteria are good at taking care of guts themselves.
If you're worried about sugar and your teeth, brush them after eating yogurt,
I am all in favour of "healthy eating" and have written about it and created many "healthy" recipes over the years. However, I do think it is important not to become obsessive – I am not accusing you travelsafar, just making a general comment.
Several differently coloured vegetables on the plate is an easy way to guarantee a fairly balanced intake of vitamins, for example. Maybe one vegetarian meal a week would be a good idea if you are a meat eater. Fish, once or twice a week, although the mercury found in oily fish – the ones with the accessible omega 3 – is a concern. Fruit, in spite of or maybe because of the fructose, is a good snack – and not too many cakes and biscuits.