Indicative:
He GOES to a meeting.

Subjunctive:
I insisted he GO to a meeting.

If I turned it around and said, He insisted I GO to a meeting, that would still be subjunctive, but it would be undetectable, no different from the indicative, I GO to a meeting.

The verb “to be” tells the real tale, because the subjunctive verb form is “BE” for all persons and that doesn’t coincide with any of the indicative verb forms.

Indicative:
I AM here.
You ARE here.
She IS here.
We (or they) ARE here.

Subjunctive:
He insisted I BE here. Or: They insisted we BE here, etc.

Then there is always, “If I WERE a rich man.” “If she WERE a mermaid.” But again, you can’t hear a difference with “you, we, or they,” because they use WERE in either case.

So, English speakers DO STILL use the subjunctive. It’s just hard to tell when we’re doing most of the time.