Is Windows 8.1 good for gaming in Intel HD 3000 ?

I'd probably push to Windows 10; Windows 8.1 left Microsoft's Support Lifecycle in January this year, which means you'll find it will be getting left behind on a lot of software that leans on using web-based launchers, as Windows 7/8 and 8.1 stopped getting updates for things like Chrome, Microsoft Edge etc. in January.

Your issue of not being able to play games OpenGL games is likely to be driver issue. Windows 10 can automatically get a driver for the Intel HD 3000 through Windows update which should allow you to play OpenGL games.

From personal experience, I am able to play Minecraft on a 2011 MacBook Pro with a core i5 running Windows 10 that also has the Intel HD 3000, I'm not sure about much more demanding titles like Valorant as I haven't played those. But I can say that the OpenGL issues shouldn't be present.

I have the built in Intel HD Graphics 3000

It is an Intel HD 3000 I know it is old but before the Xbox Game Bar worked well for me

[quote user="Mud360Elite"]I cant afford a good gaming PC either.[/quote]The system requirements for Outlast are incredibly low. It'll even run on Intel's integrated graphics, so if the desktop/laptop in your house only has Intel HD 3000 or up then you'll
still be able to play.

CPU: 2.2 GHz Dual Core

RAM: 2 GB

OS: Windows XP / Vista / 7 / 8 - 64 bits

Video Card: 512 MB NVIDIA GeForce 9800GTX / ATI Radeon HD 38xx series

Sound Card: Yes

Free Disk Space: 5 GB

Are you sure that your graphics card supports DX12? The i5-2450M is 4 years old an has a Intel HD 3000. If your graphics card doesn't support DX12, Windows can't use it. If you want to use DX12, you need a graphics card supporting it.