Almost all satellites in LEO have been launched to the east, to take advantage of the Earth's surface rotational speed of about 5% of required orbital speed (Israel being a small exception for geopolitical reasons). Vandenberg and Satish Dhawan in India launch polar satellites to the south out of geographical reasons. But from Kodak and Plesetsk they are launched to the North instead. I don't know about inland Baikonur and Chinese space ports.
Does it matter substantially for the space debris risk that polar orbits are opposite? Since it results in an impact speed of about 18 km/s, which should be much higher than two roughly equatorial prograde objects colliding.