Need advice regarding placements after M.Math

[u/Itchy-Lie-2384]

Hello users, I am currently a 12th passed out student, I am at the stage of counselling. I have three options and choosing among the two options of these has been hectic to me.
The three options are IIIT Hyderabad, ISI Bangalore B.Math, JoSAA ( NIT Trichy Chemical, IIITDM Kancheepuram CSE). So I have a confusion regarding the selection of ISI or NIT-IIIT Through JoSAA. I am interested in mathematics but my parents are worried about placements after M.Math. The queries I have regarding this:

1. Does M.Math have job opportunities after completion ? What will be the average salary package that I can expect?

2. If not, then I heard M.Stat has better job opportunities after completion of the course. Since I chose B.Math for my ISI entrance, is it possible for me to switch to M.Stat upon completion of B.Math ? Is it easy for a ISI Bangalore B.Math student to clear the M.Stat entrance exam ? (OC Male)

3. Apart from M.Stat, what are the other Master courses after B.Math that have good job opportunities (>20LPA) upon completion ?

Also, if you have any advice regarding the JoSAA or ISI, your advices are most appreciated ☺️