Personally, I wouldn't buy a model that came out in 2020 in 2022. Support starts with the year of release and two years less support is match decisive for such an expensive product.
It's better to choose a model from 2022, which usually has better and more energy-efficient processors. For around 400 francs, you could also get a phone from another manufacturer that has 5G, 256 GB of storage and a 108 MP camera, which I would definitely prefer to an old phone like this.
Of course, it's up to everyone to decide what they want to buy, but I would think twice about it, because security comes with updates, and the Galaxy S20 will stop getting updates in October 2024, while a new Samsung, for example, would easily get 5 to 6 years of updates.