Can i upgrade/replace my GPU?

[XTREAM_1]

Hello world,
SO ummm guess ill start w my specs
Intel(R)Core i3-7100u
8GB DDR4(single)
Intel HD 620
U see i have a crappy integerated gpu. Some guy told me that u cant replace/upgrade the graphics card on my laptop/notebook. is this true? Im a guy without ANY computer knowledge at all. Ive been having issues playing games w this integerated gpu and im quite frustrated becuz my parents arent willing to buy me a new PC before my O/L Exam nxt year.(Belive me,itz quite serious here in Sri Lanka,not to mention very STRicT parents).However i am able to upgrade/replace my gpu for a better 1 if itz possible. Ty in advance for helping me. TY
Some frame rates i get in games
1)AC4 19-30FpS(24avg)
2)Paladins 45+FpS AVG
3)Fortnite genrally over 30 but huge spkes which make it unplayable at
times
4)realm royale 40FPS+AVG
5)pC BUILDinG SImulAtOR 25-35FPS

 

[superninja12]

no you can not.
An external graphics card is also no option, power and compability issues guranteed.

The help I can give you is buying a budget pc(you're looking at 500 dollars , without monitor keyboard mouse.