That's a naive way of looking at economy. Devaluing the currency is not going to help the economy on its own. A lot of other things have to happen alongside that to maybe help the economy. The best example is China. They intentionally dump their fiat so that they can remain extremely competitive on the global stage. The reason China can do this is because Chinese economy is a productive economy not an artificial debt based and service based economy.
Any other country that does that, needs to have a growing economy with lots of products to export (and be a net exporter) otherwise the only thing devaluation of currency would do to that country is inflation and more economic hardship.
This is even worse if the country in question is a net importer (has a huge trade deficit).
P.S. The COVID situation you mentioned and the money governments around the world printed was not to devalue their currency, its purpose was to inject liquidity in a dead economy so that they can overcome recession. Pretty much the same thing a lot of countries like US are doing starting from last year. The devaluation was the side effect.
to clarify a few things...
when covid happened china created money. to then buy infrastructure (hospitals) so they had a real GDP increase of new jobs, new equipment, new services..
however this increase in GDP would have caused china to take the top spot in GDP world rankings..
western countries did not like this. so they done 'stimulus cheques' to print money for spending on things. but this spending is temporary as they did not create any physical infrastructure of new jobs, new services
so the western stimulus /QE money did keep western countries in the rankings to prevent china and russia from being top superpowers in statistics.. but.. that ranking hold was temporary. and then after the QE/stimulus funds 'trickled-up' to off shore funds and tax exempt loopholes, things went bad
yep when US paid other countries for vaccine research and manufacturing. and paid international companies for the medical care insurance/hospital care.. the US print money moved offshore thus not circulating to benefit/sustain the domestic economy.
meaning due to having stimulus/QE DEBT on US numbers but no domestic infrastructure increase to offset it. things started to go negative in real world GDP stats for US.. so more was needed to be done.
in conjunction with the cut-off of russian oil, and removing the reliance of chinese produce. the next step was to try to knock russia and china down a peg in their exports, hoping this will knock their GDP positions down.. however western countries did not invest in new infrastructure/jobs to solidify western positions of self reliance. thus western countries got hit again negatively
western countries then wanted to reboot domestic infrastructure value by suddenly wanting to build more houses(large value product sales stimulus). by offering low rate mortgages to stimulate a real estate boom.. this too was short lived. because greedflation priced people out of home buying even with low rate loans.
this greedflation vs low rate loans caused the deficit between cost of living income amounts vs greedinflation... which due to lack of home purchasing didnt help stimulate the economy.. thus more things negatively happened. where the greedflation became statically inflation.. which then raised mortgage % interest rates. thus again western countries real estate boom has now dropped off and now worse than 3 years ago due to higher interest rates and lower income
..
all of this saga of the last 3 years all stemmed from the top brass of western countries ruining real world economy to try to falsify a statistic(GDP) of trying to keep the US in position 1 of GDP.. a statistic thats meaningless to average joe citizen. but meant alot to the top tier politicians of western economy
when western countries think the use of DEBT as a asset to pump a GDP stat is good(facepalm). they are not thinking beyond their election cycles tenure. they are just scrambling to not make china/russia be the new worlds superpower during their political tenure