Your gut bacteria do not eat motivation. They eat what reaches them.
A lot of your food is digested before it reaches the large intestine. Some dietary fibre and resistant starch travel further. There, gut bacteria can use certain fibres and produce compounds such as short chain fatty acids. This is one reason prebiotic fibre is discussed in microbiome nutrition.
In an Indian diet, gut bacteria benefit from variety. Dal, chana, rajma, vegetables, fruits, oats, millets, seeds and fermented foods all bring different inputs. Eating the same refined foods daily gives the microbiome less to work with. A plate of white rice and potato is not the same as rice with sambar, beans, carrot, curd and salad.
The practical advice is simple: feed the bacteria through meals, not only supplements. Add legumes regularly. Rotate vegetables. Eat whole fruit. Use cooked and cooled rice or potato sometimes if it suits your meals. Try gentle prebiotic fibres carefully if your diet needs support.
Do not jump suddenly into large prebiotic doses. Gas is often a sign that the change was too fast.
The microbiome is built through repeated feeding. Fibre is one of its most important daily food sources.
Feed the bacteria you already have before looking for a supplement to add new ones. Most Indian kitchens already hold the ingredients for it.