You're not entirely wrong but it's a very shallow take. Left is conscious of lower classes because it's rooted in egalitarism. Some right wing parties, especially Christian democrats are socially conscious because it's the right thing to do. Liberals should be treated as a separate thing that boils down to "every man for himself".

PiS was neither, they bought votes by starting social programs right before elections. It wouldn't be so bad if they weren't so inept at solving actual problems. In the end they were just throwing money at people to solve problems on their own.

Left favors systemic solutions so PiS had more in common with liberals, especially when you consider their tax reform that cut down taxes for nearly everyone. Thankfully their monetary policy was not liberal level of brain dead so regardless of that they reduced debt by a lot.