By its depth and the length of the escalators, you will not see many people going up or down the escalators on foot as is done in Paris... Moreover, do not speak of line numbers but of color: green, red, blue. The stops are well indicated in Cyrillic and Roman scripts, fortunately. Finally, each stop is indicated with its number, as indicated by a photo. You can also walk underground to access another line, many undergrounds exist, such as those allowing you to cross the streets of Kiev.

Of course, it's not just the metro. You have a fairly large bus network. On the other hand, buy your tickets at a terminal, because no sale is made in the buses, except for certain buses, but which do not seem to be really linked to the Kiev network. Parley with the controllers is difficult. No English, so a "Google Translate". You can be in good faith, you won't be fined. There is still a tram network, I still felt like I was in Warsaw, given the dilapidated state. Uber also works very well.
There is also a funicular that goes to the upper town and the lower town.

The Kiev metro is renowned in particular for its depth, more than 100m (328ft), one of the deepest ever built, its high efficiency (far ahead of the Paris region) as well as for the magnificence of its stations. Most metro stations in the former USSR are veritable "underground palaces". Inaugurated on November 6, 1960, the Kiev metro was the first rapid transit network to be built in Ukraine and the third in the USSR, after those of Moscow and Saint Petersburg1. It originally had six stations, all located on metro line 1.

The undergrounds are very large. You can travel great distances. Fortunately, there are plans like this.