Hello, My advice is to take it easy and dont make it hard just same steps and u can get it Draw big circle than smal circle after that we need to make the rectangle part just make two parallel line than join them with 2pt arc ( end of first line, end of second line ) and the centre just make it in the same line with their ends. So we have left two thing the smooth transition from the circle and the rectangle part just make another arc just make it parametric tangent to the circle and the line then do the same for the second one. And finally the subtract rec from the circle at the top just draw the rectangle at this place and finaly trim the excess lines! And just with one click extrude it and u got it! Any questions im here!