I Got the Visa for 5 years multiple entry.
1 - You should have a valid/acceptable reason to go there.
2 - You should be financially strong enough to support your travel.
3 - You should provide enough and trustable evidence to prove that you will be coming back.
4 - previous travels to other countries will definitely add value
5 - If you have a strong profile or profession, qualification they don't doubt giving you visa.
interview is just a meeting and before the intrview they have already decided