Gâday Ryan, and welcome to the forum.
Any particular reason for Vietnam as your choice. Itâs a long way from the US.?
At 29,  do you have the financial resources to support a reasonable lifestyle here. In the ballpark of around $1000 a month would be OK, some guys do it for less depending on where & how they live.
I know guys here that live on $600 a month, but they have zero cash for any kind of emergency that may pop up.
The type & class of accommodation will be the biggest factor in your living costs. The foods cheap and healthy though.
If your relying on employment income here to support that budget youâll be struggling given you state you have no specific job skills.  Teaching English is a popular source of income, BUT youâll need qualification of some approved course BEFORE most schools will accept an application.......and , it also depends on how many work shifts you get.  A lot of teachers are always looking for more work.
If your thinking about doing the hard yards washing dishes & wiping tables,....that pays about 45 cents an hour.đ
I donât want to sound like itâs all about money here .....but it is.  Just about every Expat Iâve met here that had troubles , it was usually finance based.  Some brought a lot with them & soon gave it away to skirt wearing opportunists, and some simply were underfunded from the outset.
Probably a good idea to bring that prescription for meds.  Iâd be googling & contacting a hospital or medical centre here to asses the availability of what you need.  Vietnam isnât that âup to speedâ on mental health issues either.
Youâll probably find most work opportunities are in either Saigon or Hanoi. There are expats that like places along the coast , like Nha Trang , Danang and Voung Tau.  Youâve got 3000 kilometres of coastline to choose from.
Personally I prefer Nha Trang in Khanh Hoa Province. , the climate is rated as arguably the best in SE Asia.  The bigger cities , Saigon & Hanoi have pollution issues that some people canât handle.  Actually , the airs been rated as barely fit to breath, so thatâs not good.  Depends on what your prepared to accept in quality of life.
Hope it goes well for you,,,but again, make sure you have the financials covered to enable you to enjoy a reasonable standard of living.  If you read through a lot of threads here , youâll see that the common denominator is the financial factor , which will apply anywhere you decide to go in this world.
Good luck.