cant do anything

cant do my chem.
i got 4/30 for my test.
i said i won't do well.

can't do my phy.
havent started on quantum 2.
don't understand at all.

can't do my maths.
probability of being able to do probability qns is 0.2.
probability of understanding variance and poisson is 0.

can't do my econs.
im lagging in content.
got a big fat U and underlined for common test.

close to tears now, cant even do a simple eqm question.