Can I consult the embassy about visas?

Some embassies can call for consultation ~ for example, Greece and Czech Republic, and some embassies can send emails for consultation, for example, the United States and Britain, but sometimes the answers obtained by calling or sending emails will be very stylized, or you can read the instructions on the embassy website ~ In this case, you can only ask in person at the embassy. Sometimes you can consult a travel agency, but it doesn't mean that all travel agencies can give you a satisfactory answer. After all, everyone will have their own special place and methods can be tried. I believe you will get a relatively satisfactory answer. Actually, I think the visa still depends on luck. Sometimes the materials are ready, but they will still be rejected. Sometimes the materials are not ready, but you will still get a visa.