How would you cut out these table legs? Sorry if this is a dumb question to ask, I did try to search on here and on google to get my answer but I could only find cutting out circles, mostly. I did watch some youtube vids on cutting out holes but I'm stuck with how to work w/the legs in the middle. I'm trying to create this table from scratch and I'm not sure how I would go about to cutting my mesh to get the legs like this? Once the cut outs are done how can I then create the criss-cross legs? Extruding from sides loop cuts I've done and mirroring?

Again apologies if this can easily be done, I'm still new to blender so I'm feeling kind of stuck w/this. Any help is appreciated!
Since it's symmetrical, you can use Mirror Modifier.

Create bottom right part of the X stretcher (I used Knife project tool to cut the end part)
Position origin to the center of the table
Use mirror modifier on X and Z axis