Hi,
I am not a doctor but will try to help with what I understand.......
You have a central herniation, that is also just a bit to the left of L1-2, which is encroaching on the nerves at that level on the left side. Part of the disc has broken off and is pushing on the nerves at that level.
You have another central herniation at L5-S1 which is bulging as well , resulting in it pinching the left and right nerve roots. You also have bone spurs at that level ( modic type 2 changes)
You have several levels where the discs are drying out and degenerating.
At the end of the report it says that there is ongoing degeneration since your last MRI.
I think that is basically it.
Hope this helps and if I made a mistake in anything, please remember that I did say that I am not a doctor.
Sandi