Front suspension forks question

I like biking but I have very limited knowledge in bikes.

I need a front suspension forks for one of my bike. I saw a post selling one which I would like to buy. But from its photos, I found that there is a place that it is different from the front suspension forks of my other bikes. The difference is the angle of the drop out. (I may used the wrong term, but I do not know the proper term for it). Actually, I mean the angle of the slot (drop out) going into the axle of the front wheel. Mine are parallel to the vertical line of the forks, but the one for sale is at an angle. Sorry, I cannot post the photos because I am just a new member. I am trying to find a way to post the photos somewhere else.

It seems to me that it is not that good because the front wheel may have a higher chance of coming out. Am I correct? Or am I just ignorance?