A video of Ryan Trahan

Your title is correct, but for something more natural you could write "The Videos of Ryan Trahan" or "My Thoughts on Ryan Trahan's Videos", etc.

Ryan Trahan is a famous aAmerican YouTubeur.

I have discovered him last week because I trywas watching English videos -speaking videos in order to improve my English.

You could replace English at the end with language skills to be less repetitive.

I watched one of his videos and I loved it.

You can say "and I loved it", it sounds slightly more natural to just keep the subject at the beginning though.

So, I made it as an habitude.

I obviously don't watch obviously his latest videos, so today I watched a video he made 8 months ago.

Adverb placement goes after subject
Meaning not totally clear here, obviously is maybe better replaced by a different meaning

Therefore, to discover the answer to this question, as he can afford him, he travelled into 2 very different towns.

One is considered as one of the oldest town ofs in the world.

And the other is considered as one of the most futuristic towncities of the world, which is located in Tokyo, in China.

His goal in the video was to do his daily routine in the two different places and to make a new friend.

He went first to the city in Italy.

He was waelcomed in a cavhouse.

Not sure what cave means here

It was big and the bathroom was, with a beautiful bathroom.

However, the main bedroom looked a bit scaredy because of hits ominous candles.

There were also two chairs, one in frondt of the other.

He made a tour ofed the city and ate in a restaurant where he ate pasta which looked delicious (can I say yummy?)!yummy/delicious-looking pasta in a restaurant.

You can say yummy, just be aware it sounds a bit childish/more colloquial if you use it for formal speech.

He baecame friends with the owner of the cavhouse who was really kind and looked funny.

Looked funny is normally a negative description here, a different word might better convey your meaning.

After spending one wholan entire day in this city, he went intoleft to travel in the direction of China, in Tokyo.

China and Tokyo, Japan are two different areas (not sure if you mean Asia)
one whole day works, but an entire day sounds better because it emphasizes how long he spend
went into the direction works, but left to travel is more specific to this situation

I was impressed by how the city looked futuristic.

The noun isn't clearly pointed out in the last sentence so using a specific noun is better here

He ate into a restaurant where all the waiaters were robots.

In - dans un resto
Into - dans l'interieur

But, as a matter of fact, the robots were funny and they even danced.

As a matter of fact is a formal phrase used for essays, it sounds a bit off in the casual tone of speech here

He had an incredible view over the city and d. During the night, with the lights, it was beautiful!

And there wereas the typical toilet in ChinaJapanese toilet with baglots of functions.

I hope someday I will testcan experience them because ithey looks very cool!

While he was traveling / During his travelings, he met two women who had watched all his videos and made friends with them!

To concludefinish the video, he backed up withreturned back to the conversation with his wife whenre she asked him what he would prefer.

Conclude is more used for formal essays, finish is more colloquial and appropriate here
Backed up is a motion verb for cars, trucks, etc (I backed up into a tree)

And he said that the most important thing isn't thewhat time whenin which you live ing, but with who are you are living this time with.

Thereby, he said that he's just happy to live with her.

I have discovered him last week because I try to watching English videos speaking videos in order to improve my English.

So, I made it as an habitude.

I obviously don't watch obviously his latest videos, so today I watched a video he made 8 months ago.

Therefore, to discover the answer to this question, and as he can afford himit, he travelled into 2 very different towns.

And the other is considered as one of the most futuristic town of the world which is located in Tokyo, in China.

It was so amazing how old the city was old.

He was waelcomed into a cave.

However, the main bedroom looked a bit scaredy because of his ominous candles.

He made a tour of the city and ate in a restaurant where he ate pasta which looked delicious (can I say yummy?)!

ya yummy or delicious works! yummy is more informal though

I was impressed by how it looked futuristic it looked.

He ate intoat a restaurant where all the waiaters were robots.

at or in

But, as a matter of fact, the robots were funny and they even danced.

And there were the typical toilets in China with bagsa bunch of functions.

During his traveling, he met two women who watched all his videos and madbecame friends with them!

And he said that he whats most important isn't the time when you living, but with who are you living this time.

technically this sentence works but a little choppy and unnatural try: the most important thing isn't just the time you spent living, but those you spend time living with