The Republicans have been trying to destroy the Postal Service for at least two decades. They want to replace it with private sector providers, even though the likely replacements (UPS, FedEx, Amazon) aren’t really interested in delivering first class mail, at least at anything approaching the cost of USPS mail. Before the Trump sabotage, USPS got a letter across the country in two days for 55 cents (39 cents for some business customers). FedEx will, too — for $24.30. So will UPS — for $17.70. Those who blast the government for being inefficient need to shut up. The fake accounting that the Republicans forced the USPS to adopt is like that of no government agency or private sector business and results in paper losses when the USPS is actually making money. USPS is still the most secure way to send anything, though, as none of the private carriers have their own equivalent of Registered Mail and a police force to enforce things the way the USPS does.
This predated Trump, but he also seized upon this to try to steal the election; his political hack appointee de-funded USPS even more, actually destroyed automated sorting equipment in order to slow mail down, and caused USPS to fail to deliver hundreds of thousands of legally cast ballots in Atlanta, Detroit, and Philadelphia.
Unfortunately I have pretty much had to stop using USPS because of the delays — service here in the Bronx has always been bad as even before the sabotage it would take longer for a letter to get across the Bronx than to California. And I too am seeing delays from out of town, although days rather than weeks.