If you'd seen one in the wild, you'd know it looks nothing like that, nor marasmiums either.

It's a not a photo I could possibly identify a fungus from, but I think Leucocoprinus birnbaumii is the most likely.

There are one or two species particularly noted for growing in plant pots etc. Leucocoprinus birnbaumii Plants & Fungi: Leucocoprinus birnbaumii (plantpot dapperling) - Species profile from Kew is the best known. They aren't always so obviously yellow as that one, eg Leucocoprinus birnbaumii, aka Lepiota lutea, the yellow houseplant or house plant soil mushroom, Tom Volk's Fungus of the Month for February 2002,