From Marchy 3rd to Marchy 7th, I went to back myto (the home I grew up in / my family home / my family's home).

Just "my home" on its own sounds a bit like it's your current residence. It sounds better to be a bit more specific here

March is ３月, May is ５月, Golden Week is in May

That’s because I gotit was the holiday called Golden Week!

My family home is located in Hamamatsu and my parents and my little brother are here.

Sounds a little more natural to not repeat the "my"

I was very happy to meet my family for the first time since January, 2025.

Putting the pause here emphasises the 2025, which sounds a little weird. It would be more natural if you were talking about some January that's further in the past (e.g. "January, 2023") to emphasise that it's not _this year's January, but January 2025 is what people will expect so the emphasis comes off a little weird

Its origin is Chainaese but it is not equal chathe same as Chineese food.

"not equal (to) Chinese food" actually means "not as good as Chinese food". It's better to say "not the same" if you just want to point out that it's different.

Looking back on My Golden Week

If you want to use 'my,' I think 'Looking back on my holiday' would work.

From March 3rd to March 7th, I went to back myto the home I grew up in.

That’s because I gotit was the holiday called Golden Week!

My home is located in Hamamatsu, and my parents and my little brother arlive there.

I was very happy to meevisit my family, because I haven't seen them since January, 2025.

The most delicious food that we ate iwas Hamamatsu-gyoza!

Its originated isn Chaina but it is not equal chaxactly Chineese food.

I’ll eat Hamamatsu-gyoza with my family when I return my houshome!

Looking bBack on My Golden Week

From March 3rd to March 7th, I went to back myto the home I grew up in.

Here, "the" sounds much more natural than "my", since the phrase "I grew up in" already implies that it's your home. Conversely, if you removed the phrase "I grew up in", then "my" would sound more natural than "the".

That’s because I've got the holiday called Golden Week!

Alternatively: "That's because I have the holiday"

My home is located in Hamamatsu and my parents and my little brother arlive there.

You can omit the second "my".

I was very happy to meet my family for the first time since January, 2025.

For such a recent time, specifying "2025" can be quite stiff. More casually, you can also write "since January this year".

The most delicious food that we ate iwas Hamamatsu-gyoza!

Its place of origin is Chaina but it is not (equal chaivalent to) Chineese food.

Alternatively: "Its origin is in China" or "It originated from China".

I’ll eat Hamamatsu-gyoza with my family when I return to my house!

From March 3rd to March 7th, I went to back to my home, where I grew up in.

That’s because I got thea holiday called Golden Week!

My home is located in Hamamatsu and my parents and my little brother are there.

The most delicious food that we ate iwas Hamamatsu-gyoza!

Its origin is Chaina, but it is not equal chaxactly Chineese food.

I’ll eat Hamamatsu-gyoza with my family when I return to my house!