my dell laptop is barely using my main GPU and is instead using almost 100% of my IGPU

i have a a dell inspiron 5583 with windows 10 home installed, an Intel(R) Core(TM) i7 8th gen CPU, 16 GB ram, Intel(R) UHD Gaphics 620 IGPU and a NVIDIA GeForce MX130 main GPU, and whenever i open a game and look at my task manger it always says that its using 20-30% of the main GPU and 100% of the IGPU, and i usually have very low fps, so i was wondering how can i make it so that my laptop uses my main GPU more?