I have a question

Wanna apply for evisa thailand setv and what about booking confirmation do I need to book real flight because it's expensive will cost me 800$ and if my visa didn't approve? It's a big risk , do I need to book flight from near place to bangkok like kula lampor to bangkok even if I don't live in KL or book onwards fligjt that remains for 2 days on hold

But if my visa take longer than 2 days ?

What’s the deal with flight and accommodation requirements for the DTV? Do I actually need a flight booked? I’m planning to fly to Thailand after Tết in Vietnam, but if I don’t get the DTV, there’s no reason to book a flight until it’s confirmed. Also, I’ve noticed some places asking for proof of accommodations in Thailand. How am I supposed to provide that if I’m not there yet and can’t rent a place? It feels like a chicken-and-egg situation. Any advice?

I’ll be applying in Ho Chi Minh.