How can I cancel my free trial of Dropbox?

I signed in to a free trial with Dropbox on the 17th

I'm only a few days in.

I was unable to use it.

I want to cancel... there is no option on the app for me to cancel.

I went through all the information,
it says that I may have signed in through my Google account.
There is no account in Google Playstore.
And nowhere in the Play Store or my Google account does it give me an option
TO CANCEL
only
TO REMOVE
the subscription.
And the information in the Dropbox app says that removing the subscription does not cancel the payments...
You have to CANCEL.
Where do I cancel ?
I cannot cancel, please help me.

... Nobody to talk to.

It looks like I'm on BASIC.
If I'm on Basic then...
Is this a free trial?
Do I have to worry about being charged after 30 days?
I'm not sure if I've signed for a 30 day trial or just for the free basic service.

If it's showing basic, do I need to worry about being charged? After 30 days.

Can you be on basic and a free trial?
"At the same time"
and then need to worry about being charged at the end of 30 days.
I'm finding no option to cancel so I'm hoping I'm just on basic and no free trial..

Help me understand.