How can i make a simple video editing?

I just want to edit a simple local video but it can’t…
I need to reduce its size to send it by whatsapp. In tools there is an express video editor…
But when I try to use it, it tells me that it is discontinued.
Said this:
“XSplit Express Video Editor has been discontinued and is no longer supported or in active development.”
I do not understand how the most basic and simple cannot be done with the paid version…
please your help friends!..