If You are interested in this type of leotard - bodysuit - swimsuit this is the pattern in sizes XS, S, M, L ( EU 34, 36, 38, 40, 42).
The Pattern is in PDF format. You will need to glue some details together.
The pattern doesn't include a tutorial on how to sew, but I have a video tutorial for a very similar sewing pattern (difference in the waist part):
It was made for a regular A4 printer.
Suitable for beginners.
Without seam allowance. I suggest adding 1 cm for seam allowance
It requires about 32 inches or 80 centimeters of the main fabric.