RE: SOLOI liked it as well and also suspect that it was (not intentionally) set up to fail, esp coming on the heels of a more successful than expected Black Panther then Infinity War (iirc).
It also came out a week after Deadpool 2.
They should have pushed it back to July/August/September.
There was a period of months that year where there weren't many big releases besides Mission Impossible. Films like the Meg came out during that period and did better than Solo. That film is ok, but I'm sure it did as well as it did for lack of anything else out.
Everyone seems to be onboard with Solo being a decent to good film. I would be more interested in a film or TV series based off that, even if not on Han, than more of the sequels.