This was one of our cheaper experiences in France.
Do not ride the Tuk Tuk, no matter what you are experiencing.
Buy a train ticket at the kiosk, better still buy a ticket on the Eurostar train. Do not buy a week travel card.
Eat locally to where you are staying, and most people will have some Anglaise, but do make an effort with some Francaise.
But Paris is nice to visit, but if I went again, it would be out of the city and down the 2nd or 3rd class road, and experience rural France 🇫🇷, and make do with the little bit of their language I have.