>> Migrating away is obviously not an option in 2025 and onwards

Why so? Yes it may seem difficult with lesser immigration friendly sentiments; however that shouldn't deter you.

You haven't mentioned your current situation, your experience etc to give more tailored suggestions. However, if making a living is not a concern for you in Nepal, then that gives you the freedom to pursue contributing to open source projects in subjects/areas (graphics programming may be) of your choice.

Otherwise based on your experience, you can apply to companies in UK and Europe, many will sponsor if you have the right skills and experience. That takes a while but it's not impossible.

Have you explored India as an option as Nepal and India have free trade movement and Banglaore/Hyderabad/Pune are great options if you focus on product and FAANG companies there. This may in fact be an easier route to get valuable experience in a reputed company.

>> My age is 28...

And 28 is hardly the age really to worry about moving/not moving, unless there are compelling reasons like having to stay back for strong personal reasons.