4 legs on weekdays, 2 on weekends

Question

1. I have 4 legs on weekdays, but 2 on weekends.

2. I can fly, but I have no wings.

3. I rhyme with many, but don't rhyme with many.

What am I?

Answer 1

A little out of the box, but I think the answer might be

Germany

I have 4 legs on weekdays, but 2 on weekends.

Let's look at the days of the week in German - Montag, Dienstag, Mittwoch, Donnerstag, Freitag, Samstag, Sonntag.
Here, we see that the "fall letter" g appears four times on weekdays and twice on weekends. I think the legs here refer to the part of the words which fall below the bottom line of primary writing lines.

I can fly, but I have no wings.

Germany can fly (its flag).

I rhyme with many, but don't rhyme with many.

Germany rhymes with the word "many", however it does not rhyme with many words (at least, relatively speaking).