This is really hard to do in blender 4?

What is happening? Walk us through it. Post some screenshots, time stamps in the video to see where you are having trouble.

Yes, Selection hasn't changed, as far as I know. Please be more clear. Timestamps and Screenshots can really help us figuring out what is happening.

Hmm, I don't think the selection methods have ever changed, apart from the old right click select is now left click select by default, but you can change it if you wanted to.

What is it specifically you are having trouble with?

Have a read of these, they might help you overcome the doubts you may have with the older version.

Learning 3d through various blender versions
Different Versions - Community Discussion
A word about blender versions