I grew up in Moldavia, which was very similar to Ukraine. Here are some brief descriptions of our life conditions.
HEALTHCARE: Free. Long lines in clinics, minimal electronic equipment. Technology lagging behind the West by decades. No per-patient electronic monitors in hospitals - they were just a multitude of rooms with beds. Ambulances took 3-to-infinity hours to arrive, that is to say half the time they simply would not.
My mom had to bribe someone to get me some medical cream that you can simply get in any pharmacy in a capitalist country (including modern Russia).
Needles were routinely re-sterilized and reused - the country could not afford to produce single-use needles.
Dental cavity repair was done without anesthetics even if you're a small child. Overall the dentistry was at 19th century level. We didn't have the notion of teeth cleanings or mental health, or depression or anxiety. Those were luxurious concepts for which there was no space in USSR.
Our women were getting seriously worried if they weren't pregnant by 24. By 27 they were considered "endangered old moms". By 40 people would consider themselves over the hill, and by 60 they would have one foot in the grave. Don't believe any "statistics" that would make Soviet health or mortality on par with the West. USSR was a totalitarian regime, and there was no honest collection of data.
EDUCATION: Free and very good in terms of actual education. Of course, the Western mind is conditioned to believe that good education puts you on a good path in life. You get paid far more to be a surgeon than a construction worker in the West - but not in USSR. This is why there was a flood of immigrants from countries like USSR who used to hold prestigious degrees, like lawyers and surgeons, but still chose to become "lowly" taxi drivers in America, because being a taxi driver allowed them to provide a better quality of life for their family than they would ever get in Soviet Union - and just as importantly, an upward path.
In USSR you rarely had an upward path, and usually it was obtained via illegal means. The whole ideology on which our country was built, detested those who are better than you, and thus, it detested "you 10 years from now being any more advanced in quality of life than you are today". So you weren't allowed to become that.
PUBLIC TRANSPORT: I haven't used the metro services. Our electric buses (trolleybuses) were always packed tightly with cranky people. We always stood in them. Our trains were minimally serviced - there's a great scene in the American-Russian film "Transsiberian" which demonstrates our customer service on trains. Some things haven't changed. I remember the train bathrooms being nasty, like beach bathrooms.
ABUNDANCE: This is a very important topic that gets skimmed over by people in the West who take the abundance surrounding them for granted. In Western countries, most of the scarcity you experience, is localized to YOU. YOU can't get the fancy car because you don't have the money. YOU can't afford the fancy medical treatment. YOU are looking thru the store window at that QLED 8K television that you can't budget for right now.
First-Worlders have trouble understanding systemic scarcity, where no matter how good you are at your job, or how well you're performing within the system, you simply can't get things. You can't ever get toilet paper, nobody even tries. You can't get good jeans. They're too complex and too high-quality to manufacture by our factories. You can't get vegetables year-round - they come out in seasons, because we didn't have hydroponic technology. When your fridge of TV breaks, you can't just put it out and buy a new one - these are massive investments, they need to be repaired ad infinitum.
We were taught to expect everyday scarcity, that's how our world worked. Milk is in deficit this week. Meat is in deficit this week. Hot water (or all water) will be turned off for a couple of days, fill up your bathtub. Go get water from the forest if you must.
If your disease exceeds our medical abilities, you can't gather enough donations to get treatment in a better clinic. There IS no better clinic.
When I walked into an ordinary American supermarket, it blew my mind. All kinds of BRANDS (which we didn't have the concept of) of different types of "in deficit" foods, just lying there, without crowds stampeding and forming multi-hour lines immediately.
American pharmacies... you just go in and buy Tylenol without a prescription from the doctor, without driving to the clinic in the angry bus and waiting for hours to see the doctor...actually I don't think we had anything like Tylenol even by prescription.
Imagine growing up in a world where scarcity and gaming the dysfunctional system to get basic things, was part of your mentality. Then you have a 16-hour plane ride and end up in what is basically paradise - a capitalist country.