Transmission issue

There could be a number of things that causes this but the first and most important thing is to check the fluid level and condition.

Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

Once we know what the fluid is like we can make the next decision but we should check for codes just to find out if we have any.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Once we know what this info is we can go from there but this sounds like a fluid issue so let's start with this. Thanks