Answer
Some familiar products can be found, but you should not expect an exact match to the Russian or Belarusian range of products. For example, the local Ensalada Rusa resembles Olivier salad, although its ingredients and taste may differ from the homemade version.
Some items have to be substituted or take longer to find. Examples include the absence of frozen blackcurrants and the limited selection of specialised pet food, which sometimes has to be ordered from abroad.
It is best to categorize your belongings and products in advance as irreplaceable, replaceable, or items whose availability can be addressed after arrival. Over time, you will develop your own map of shops, markets, and services tailored to your neighborhood, budget, and family's habits. This reduces anxiety and helps avoid bringing excess luggage.