Why British conquered India and why we self pity

But we should have fought tooth and nail with the British and Siraj jud daullah shouldnt have lost the battle with the East india company in the 1700s in the battle of Plassey when his forces numbered 50,000 and British were just 3000 strong and they defeated him by intense loyalty of their troops.The Pathans of FATA didnt lose the battle at Waziristan and hence never got conquered that sets a great precedence.This plundering of our wealth by the british is our fault we shudnt self pity and get united.Its the thief's job to steal and its the home owners job to keep the doors locked.We didnt lock our doors so we werent doing our job right while the thief did everything professionally so we cant blame the thief