There is an old Chinese saying: 置之死地而后生 put the place of death and then live.
My opinion:
For ordinary Bangladeshi citizens, if they really want to help their country, they only need to unconditionally support the current government, even if it is a corrupt and incompetent government, even if it is a government that betrays its people, they choose to support him unconditionally.
For a country to be strong, it must be united enough. As soon as any element of disunity arises, it will be exploited by other countries. This was followed by endless civil strife.
So, choose to trust your government. No matter what kind of government it is. When your government has accumulated enough trust and prestige, even the most corrupt government will change.
Don't trust any other country (even if I'm Chinese, please don't trust China). In international dealings, there are only eternal interests, and there is no selfless help.