Great questions. These links have very useful info, so if my answers don’t help well enough check there or someone with more experience might have a better reply.
DivaCup’s Guide for First Time Users of Menstrual Cups and video How to Insert and Remove a Menstrual Cup have comprehensive starting points. If you want a very fast intro, this video is only a minute long How To Use A Menstrual Cup - Look “Inside” at Menstrual Cups
how many ladies would want to have much interaction with their menstrual blood as much as this cup requires…?
With a little practice, a woman can dump it out and wash it without any interaction with their menstrual blood, since it stays in the cup until flushed.
some people are still below par with hygiene during menses, especially proper disposal of pads
Hopefully this could help since disposal mainly involves flushing the toilet instead of handling pads. Soap and drinkable water cover its regular washing needs.
When plumbing isn’t available, in a rural area or while hiking for example, disposal can work similar to outdoor poop disposal, for instance by using a small hand shovel or trowel to bury the fluid away from any water sources.
dispose of the cup
That’s one of its greatest advantages. It can last for years.
how cheap is it compared to the conventional pads??
It’s infinitely cheaper since a menstrual cup costs less than one box of pads.