How to make C++ indentation correct?

[ck961018]

I use zed to write C++, and when I type the following code:

if (true)
int a = 1;
int b = 1;

The indentation on the second line is incorrect.

And when I manually add indentation on the second line, the indentation on the third line will be incorrect:

if (true)
    int a = 1;
    int b = 1;

I think this should be due to the tree-sitter, and caused by the indents.scm being too simple.