What are the Thai embassy e-visa application capabilities and DTV requirements for medical treatments and freelancers?

Again, some more questions about DTV:

1. Which Thai embassy in one of the neighborhood countries of Thailand are using E-Visa online application system ?

2. If you book a doctors appointment or plan a surgery for the DTV,

a) must this be in a Governmental Hospital ?

b) I assume, not every doctors appointment will get approved (i.e. Blood Test, MRI or other any other outbound treatments).

The focus will be more on inpatient treatments (i.e. Hip surgery, Cosmetic surgery).

Am I correct ?

3. If somebody just started (or plans to start soon), to become a freelancer, DN etc. and cannot yet show a portfolio,

a) can this person then NOT apply for DTV ?

b) If that person CAN apply, what alternative documents can this person bring instead ?

Thanks a lot 🙏🏻