Well. Like i said you cant upgrade GPU inside your laptop which runs your Graphics. I know few people who turned theyre old laptops to mid level gaming laptops with processor / ssd and egpu upgrades but this expensive. If your motherboard supports exp gdc beast you can make few cheap choices however.
This would make your laptop desktop btw, you cant easily plug out eGPU since it goes to your wifi slot.
SSD is optional, processor and egpu is required to make it low-mid level gaming laptop.
What kinda games you would like to play and on what Graphics?