I can tip toe from the seat with the post all the way down.
Your ability to reach the ground from the saddle is a near enough pointless feature of the bike.
The primary purpose of a bike is to be ridden.
For a bike like that, the majority of riding will happen with butt-on-saddle.
For measuring purposes, your leg should be straight with butt on saddle, pelvis horizontal, and heel on pedal at lowermost position.
(riding is generally done with pedal under ball of foot)
It is very common to have to get off the saddle, or to lean the bike over to reach the ground while stopped.
According to this:
https://www.raleighusa.com/tourist
you have the size Raleight think you should have.
It's a general recommendation and a somewhat practical feature that you "should" have some clearance between your crotch and the top tube when straddling the bike.
But it's far from required. People with shorter than average inseam measurements to their overall lengths have logged thousands of happy riding miles w/o being able to straddle their bikes flat-footed.
So yeah, the bike looks big for you. But it's not obviously, function-impeding too big. And you like it otherwise.
Your call.
Should you decide to return it, consider looking for a bike with a smaller wheel size to get a proportionally lower frame.