Some thoughts from a depressed pessimist: ymmv
Economics is the "dismal science", and really is the study of people and their behaviour. For some reason economists got a bad attack of clever maths, and decided they could predict the future and therefore rule the universe. It's really not working out for them, but until everyone notices, they are building their castles in the air and wearing their new clothes with aplomb, to mix some metaphors.
I would say there are two types of inflation: real world cost increases, and financial manipulation/printing/economists running amok.
The first of these are things like food inflation, which we are seeing because of worldwide crop failures. No economists were harmed in the raising of these prices. Supply and demand, time preference etc all go to making prices between two or more real people, buying real goods. The "free market", if you will. Fewer real things means each thing gets more expensive, as people bid up prices based on ability to pay and need/want/desire. Obviously government tries to get between people wherever possible to make monopoly or cartel conditions and skew the free market, but that's just what government does.
The second type is based on unreal conditions caused by our current insane monetary system (money as debt) and this inflation is caused by the creation of more debt - as - money out of thin air. The people closest to the money spigot get to spend first, before prices rise, and then the shiny new money radiates out, causing too much money to chase the same amount of things in the real world, giving rise to a reduction in the value of money, rather than an increase in the cost if goods. It looks like a rise in prices, but is actually a fall in the value of each unit of currency.
You can see easily who gets to put their snouts in the trough by where the inflation is prevalent. Property, mega yachts, classic cars, invisible works of art etc. Not too much will trickle down to the real world where us serfs live, other than the UK with its ludicrous property market designed to crate false wealth out of thin air.
Pretty much everything since 2008 has been deflationary, but deflation is garlic to the banking vampires, so they print and print to keep the system afloat, but keep the free money mostly to themselves. The more deflation there is, the more they will print to save the banks. When they start giving free money to the serfs rather than the elite, you know the wheels are truly coming off.
During times of inflation asset prices rise faster than wages, benefiting asset owners at the expense of wage earners. During deflation the reverse happens.
In other words, deflation will be fought tooth and nail, because the owners of assets stand to lose more in deflation that the earners of wages, and asset owners make the rules.