$600-$700 gets you Laptops with the following Graphics.
GeForce MX150 "Mobile 1030GT" + 8th gen i5
HD Graphics 620
AMD APU
Ryzen 2500U "Refurbished"
960M + 6th Gen i5 "Used"
$701-$799 gets you something a little more gaming worthy.
1050 GT + 7th Gen i3 or i5
1050TI + i5-8300H
1060 + 8th Gen i3 or i5 "Refurbished"
970M + 6th or 7th Gen i5 or i7 "Used"
Possible a 1060 + 6th gen i5 or i7 "Used if you search locally"
None of these are going to be ultra slim Aesthetically pleasing like $1000+ units you can find now, they will all have faults in some of the following; screen selections, larger bevels, flimsy keyboards, lack of ports and weight. If your a student and in the US contact Dell directly or see what your college/university can...