In general, I think we all need this industry.

What is "this" referring to, a barbershop or the beauty industry? I changed to industry because I think that is what you mean.

It will continue to be prosperous in the future and, so I think it would a good placeindustry to work in.

I think saying "It will be prosperous" is a little strange because it suggests it isn't prosperous now.

In the video, it was mentioned that a sense of beauty is something innate.

Or: In the video, it was mentioned that having a sense of beauty is something innate.

Well, first.First of all,

"Well, first" is not a sentence.

First of all, I think about plastic surgery, then beauty saloons where girls get their nails done, as well as other things.

It will be prosperous in the future and I think it would a good placearea to work in.

When talking about an industry it's referred to as 'field,' 'industry,' or 'area.'

I just watched Kurzgesagt's video : "Why Beautiful Things Make us Happy."

In the video, it was mentioned that sense of beauty is something innate.

A comma is needed to separate the dependent clause from the main clause.

For example, even Alzheimer's patients can recognize beauty d. Despite not remembering their choice, they would rank the same pictures in the same order of beauty.

It was also mentioned that people in general felel better when there are more beautiful things, and that people prefer to live in beautiful cities.

Well, first. of all,

I probably should talk about what comes to mind when I hear the words "beauty industry".

I would combine the first two sentences, and it is
... when I hear the words "beauty industry".

First of all, I think aboutI think about cosmetic things, examples being plastic surgery, then or beauty saloons where girls get their nails done, as well as other things.

Sounds smoother like this - you said in your last sentence 'first'. The 'then' in this sentence makes it sound awkward.

In general, I think we all need this.,

I personally wouldn't say 'this', it sounds clear. 'these things' or 'cosmetics' or 'self-care'

Ibecause it benefits us all.

It will be prosperous in the future and I think it would a good placefield to work in.

a good place to work in -> an actual place (a barbershop, a salon)
a good field to work in -> field is an industry (a cluster of jobs), which is what you were trying to say here

I just watched Kurzgesagt's video called "Why Beautiful Things Make uUs Happy".

In the video, it was mentioned that sense of beauty is something innate.

For example, even Alzheimer's patients can recognize beauty d. Despite not remembering their choice, they would rank the same pictures in the same order of beauty.

It was also mentioned that people in general felel better when there are more beautiful things surrounding them, and people prefer to live in beautiful cities.