It wasn't that they didn't want to incorporate into Romania after Moldova became independent. Rather, it was that Russia wanted to use it to keep Ukraine and the Western European countries in check. So if Moldova wanted to integrate into Romania Russia would have blocked it anyway. So in this case, Moldova did not choose to integrate into Romania. This is mainly because Moldova's geographic location for Russia is a buffer zone between Russia and Europe.
Moldova is a landlocked country surrounded by two countries, and because of its proximity to the Black Sea, he is also the closest landlocked country in the world to the sea. But it didn't start out that way, it originally belonged to the sea-front region as well, and it was Bisarabia that created the type of geographic country he is today. Bisarabia is actually Moldova, and after the Soviet Union annexed him, it divided up his southern coast to Ukraine, while most of the remaining territory was then merged with Ukraine's Dzhokhar territory, which eventually made up the former Soviet Union's union **** and state of Moldavia (Moldova during the Soviet era).
Moldova and Romania have the same blood in their veins, as they both belong to the descendants of the Dacians. And Dakia originated from northern Romania, which was also a kingdom in ancient times, and then after it was conquered and ruled by the ancient Roman Empire, the local people intermarried and multiplied with the Romans to create the present-day Moldova and Rumania, so technically they are actually descendants of the Dakians and the Romans.
The reason for this complex situation cannot be separated from Moldova's geographic location and national identity. From the point of view of national identity, he and Romania are of the same origin, share the same culture and language, and have experienced a similar history, the inner sense of belonging will naturally tend to Romania. But geographically, he is actually a buffer zone between Russia and Europe. Russia can use him to keep Ukraine in check as well as deter Western Europe, so it will block his return to Romania anyway.