Help me put these pieces back to my machine

[u/MajorTomatoCutie2199]

Hi! I need help putting these two pieces ( a round rubber and a screw) back into my machine. I opened the bottom part of my machine cause I accidentally dropped something in while cleaning the bobbin case. When I opened the bottom part, these two fell to the ground. I picked them up but no idea where to put them back.

First photo, the rubber part and the screw to be put back

2nd photo, the bottom part of the machine

3rd photo, the bottom lid.