How did people in African Asian Countries feel about Imperialism?

It depends who you ask. Obviously, small numbers of Europeans could not have conquered large numbers of Asians and Africans w/o some local help. The British in India, for example, ruled with the cooperation of local elites.

Most of the colonies were a drain on the finances of the ruling country and Imperialism was only sometimes popular. The Boer Wars and British intervention in Sudan were about as popular in Britain at the Iraq was has been in modern America.

We should not judge imperialism in the past by the standards of today. Most of the world at that time was ruled by despots and oppressed. The imperial government was usually no worse than the local despotism and was often a step up. Only after a few generations of development did people get sick of foreign rule.

So the answer to how people in Africa and Asia feel about imperialism depends on who, where and when. Of course, there were Asian & African Empires and European often won the allegiance of local people by throwing out more oppressive local empires & tyrants.

The whole concept of "countries" is a modern one. The nations we see in modern world's just didn't exist back then