what is the best bread for dipping in olive oil Preferably to Buy from the store?

It is a matter of your preference, by two favourite would be a supersoft white as long as it is fresh, and the other would be a tiger loaf which is garder and chewier.

Dune

I would definitely go for a white bread, the taste cannot be too strong. Probably a sourdough bread (perhaps a pain au levain) or a yeast based bread such as a ciabatta. If you want a more soft bread you can go for a softer white yeast bread such as "pain de mie". But just regular white bread (that toast) works well too.

Italian bread loaf from the deli. Wheat loaf from the deli or in the bread section (Italian bread). in the bag. Very soft. In the bag also is Sour dough.

Sangak bread

sourdough or a white bloomer from marks & spencers make ideal dipping breads for olive oil.

🇮🇹 bread

I would say sourdough!