Restaurant Menu Landing Pages

Hi guys, I´m back breaking my head to start another idea to do something by miself.
I will try to introduce the idea and the background of the thinking process at the same time.

I want to make a cheap service for restaurants and similar places, for them to be able to have their menu and promotions online (of course, for places without websites).
I thought that because I´m seeing a lot of places in my country that don´t have the menu easily to find, and that can take you to lose sales or sell less, i.e.: I order the same thing at the same place, but maybe if I know all they offers, I could change the order, or add more to the same order. Or you don´t enter a place because "it looks expensive".

Mostly I found the answer to the idea in Social Media or apps like Uber Eats. I want to create something able to work WITH Social Media, and replace apps like those, that charge you for every sale you make (and at least here, people add that fee to the price, that´s not great either). Every client that you have from UE, for example, you can ask him to order from the landing page and both save money.

Some more explanation:
It´s not a Marketplace, I just want to improve the customer-food place. Sell better, not more, I can´t offer that just yet.
I was thinking in doing it cheap to be a possibility to take your Uber Eats costumer (i.e.) and just buy direct from you, saving both money. With cheap I think like 10 dollars a month.
The landing page will be done by me I think, and have a way for the bussiness owner to keep it to the date.

Thank you if you read this far, every opinion works for me, and sorry if there´s some grammar mistakes, when I started this post I realized how long ago was the last time I wrote in English :)