がたくさんいます

there are many

→ が
phrase Rare #42,703
there are many Used for people and other living things.
JA: 公園には子どもがたくさんいます。
EN: There are many children in the park.

都会には、流行に敏感な人や、パーティー好きの人がたくさんいます。

In the city, there are lots of people who are fashion-conscious and love to party.

海には魚がたくさんいます。

There are lots of fish in the sea.

この世界には、いい人がたくさんいます。

There are a lot of good people in this world.