Student visa - Visa process & documents Questions

Is a study visa better than a work visa for me if I want to go abroad to work in Germany for a Bachelor's?

What are the chances of visa approval for Germany currently?

Is it compulsory to show accommodation proof and a certain minimum bank balance for visa applications, especially for Germany?

Will I face any issues with a work visa after going on a study visa to Dubai?

If I am dependent on my aunt after my parents expired, do I need any adoption or legal documents to show that in Germany?

What kind of chance do I need in my bachelor's degree for the visa application?

Are visa approvals for countries like the UK and Canada generally good or are they rejecting many applications?

Will the visa application be processed on time if biometrics and other formalities are completed by 15th August in UK?