Let's look at it point by point.

1. Global warming is not a myth, but a reality.

The global climate is, on average, getting warmer. This doesn't mean that "winters are gone," but:

Average winter temperatures are rising;

Frosts are also milder;

Temperatures are increasingly around 0 degrees, rather than -10 to -15 degrees.

And when it's -1 to +2 degrees Celsius outside, it's very difficult for snow to "survive":
it falls → turns to mush → melts → leaves behind puddles and mud.

2. In Ukraine, winter has become milder, measured by the numbers, not just by how it feels.

Meteorologists note that:

the average winter temperature has increased over the last year;

frost is occurring for shorter and shorter periods;

more days with thaws and rain in winter.

So, instead of "one long winter," we've got a seesaw:
a little frost → a little above zero → rain → sleet → above zero again.

In such dense conditions, snow cover is almost nonexistent.

3. Precipitation is still present, but its form is changing.

Important:
rain and snow are both forms of precipitation. Their millimeter count may not be much lower than before, but:

in a warmer winter, precipitation falls as rain, not snow;

if the temperature fluctuates around freezing, the snow melts quickly.

And this has an effect:
there's moisture, but visually, it looks like a "snowless" winter.

4. City + heat = snow can't survive

In cities, snow melts even faster than in villages. Why?

asphalt, houses, cars, and equipment all give off heat;

a lot of warm clothes from heating, industrial zones, and transport;

black roads and roofs get hotter during the day → snow melts faster.

In rural areas or in the mountains, snow may still be heavier and last longer,
while in large cities, it melts almost the same day.

5. The climate is becoming more "European"

In Ukraine, the climate is gradually shifting toward milder winters, similar to:

northern Italy,

the Balkans,

regions of central Europe.

That is:

less consistent frosts,

more rainy and cloudy days,

snow is more often described as "a guest for a couple of days" rather than "a host for three months."

6. "There used to be more snow" – it's not just nostalgia.

Some people think: "it just seemed different in childhood." Partially yes – memory chooses the most vivid moments.
But in the case of snow, the numbers confirm the impressions:

more stable snow cover in many regions of Ukraine lasted longer;

the period of "real winter" was longer;

Severe frosts and snowfalls were more frequent.

These days, winter is increasingly like:

"slush, rain, a couple of days of snow, then it all melts."

7. What does this mean for the future?

If the warming trend continues:

Snowy winters will become less and less common;

Snow in most regions will become a rare occurrence rather than the norm;

Truly "fairytale" winters will be either in the mountains or in more northern countries.

Brief summary

Why there's less snow in Ukraine:

Average winter temperatures are rising.

There are more days with thaws and rain instead of snow.

The snow that does fall melts quickly due to the above-zero temperatures.

The city additionally "warms" the air and the ground.

Snow, as a natural phenomenon, hasn't completely disappeared anywhere,
but the climate is changing so that it appears less frequently, lasts less,
and increasingly gives way to rain and slush.