If you are willing to study hard. After finishing secondary school (4 years), you can directly apply for JC (2 years). If your grades are not satisfactory, you can go to the Polytechnic (3 years) first, and then go to college after graduation.
When you first come to Singapore, you will not be used to it, but after a while, you will like it here. Safe and clean. As long as you are willing to work hard, life here will be simple. Living in Singapore, it doesn't matter if you don't know English, because 75% of Singaporeans are Chinese and can communicate in Chinese. Your mother should be completely at ease. Since all your classes are taught in English, I suggest you strengthen your English listening and listen to BBC more, because my brother has come from a stage where he can't understand and wants to try everything. How do you know you can't do it without hard work? Wherever you are, you should work hard.