I was born and raised in Chigasaki whereich is famous as a surfing town in Japan.

I used to play surfing when I was teenager, but since I saw JAWS, I quit surfing.

Grammatically correct, but I would recommend something more natural sounding, like: "but after seeing the film 'JAWS', I quit surfing." or "but I quit surfing after seeing JAWS"

For whatever reason, it's more natural to use the continuous form of the verb after the word "after": "after eating", "after seeing", "after walking"

However, I've been thinking to move somewhere that is nearby my office.

This sentence is a bit confusing and lacking information that connects to the previous sentences.

"I've been thinking" means that this is in the future.

But the rest of the story is about the past.

I was born and raised in Chigasaki, whereich is famous as a surfing town in Japan.

I used to play surfing when I was a teenager, but since I saw JAWS, I quit surfing.

However, I've been thinkconsidering moving to mova place where is nearbyI can surf close to my office.