I agree that it will be difficult to find a scholarship especially in engineering.
The “engineering” major is extremely competitive and is “impacted” at a lot of universities. Impacted means that there are too many students and too few seats.
If you want to get into a school for engineering, you have the be the best in your country to even have a minute chance.
What kind of engineering were you planning on studying? Is this just something that you’ve selected for employability in your country?
My husband and daughter are both engineers. They have a passion for it. Their programs were long and difficult. They both have different engineering degrees and both went onto grad schools because they wanted to learn more specifics. Their jobs have required US citizenship before even applying. A number of firms have posted, on their websites, that they wont sponsor non-citizens. So, it’s a good thing for you to target your country for engineering.