Why is Labour losing support so quickly?

Hi,

I didn't pay much attention to your politics lately, but I remember Labour being super popular early last year and eventually winning elections. When I checked how polling was it looked like this:

May, 2024:

Labour 44%

Tories 23%

Reform 11%

Lib 10%

Then elections (July, 2024):

Labour 34% + Starmer approval rate 60%

Tories 24%

Reform 14%

Lib 12%

And now:

Labour 27% + Starmer approval rate 30%

Tories 22%

Reform 24%

Lib 12%

so the question is: what happened? Why is Labour becoming so unpopular? Why is Reform rising so much? Can they turn it around, or are we looking at some changes soon?

Edit; Thank you for responses, I think I have a decent idea what is going on now :)