Motivation
Let’s say you have a team that has a lot of waterfall experience new to agile and you want to start doing all the ceremonies and there are push backs how do you motivate them?
It's unlikely you'll motivate them with ceremonies. They'd wonder what the point was, as I would.
The Scrum events provide multiple opportunities for team members to inspect and adapt, and to gain control of their own work and their own profession.
What is usually needed is a sense of urgency for change, in order to overcome established waterfall practices. This is something that has to be created, communicated, and reinforced from the very top.
Why do you want to start doing something? If you can get to why the thing that you want to change - to start doing, to stop doing, to change how it's done - is beneficial, you are probably more likely to get support. Change for the sake of change is hard. Change, especially incremental change, to solve specific problems, is something that can be "sold" to the people who need to make the changes.
...you want to start...
This is the first problem. In agile practice, "you" does nothing but "we" do a great deal. What you want to do must be shared by the rest of the team or you are not going to get the agility that is desired. And on that point, what is the agility that is desired, who desires it, and why do they desire it? Do you see the common theme in the 3 responses you have received so far?
What is driving the transition to agile practices that you are trying to push? You don't specific state it but you are implying by posting here that Scrum has been chosen as the path forward. Who made that choice? Why was that choice made?
Asking people to do something in which they see no value is never going to be very successful.