We all know that when a country devalues its currency by making policies in this regard, it could backfire and produce results that may be of an inflationary type, whereby exports are cheaper than imports and local consumers may be left to pay heavy for imported products or patronize locally manufactured products.
Although, many of these policies are enacted, so as to gain a competitive edge in the global market and help clear out backlogs probably accrued from previous government regimes, it is many times a conscious and deliberate decision by the government to reduce the spending or purchasing power of its own currency, and it is sometimes because of neighboring countries doing same just to have an edge in the world market space.
A country that devalues it's currency to gain competitive advantage will achieve it only when it has a favorable balance of trade. A country that depends on other countries for most of its raw materials, manpower, and technology will not win the global competition struggles. The reason is that the country will have to spend more on imports which will also increase the price of local goods. Neighboring countries that import less might sell cheaper goods. The government of my country has been devaluing our currency but it has had no benefit because we import almost everything we need to produce what we sell.
*could the acceptance of cryptocurrency help stimulate a countries economy besides devaluation?
Adopting cryptocurrencies will do nothing to help a country with a dying economy. The government must fix the economy before they can benefit from the little crypto investment can offer. Just like El Salvador, nations can hodl Bitcoin and make a profit when the price appreciates.
*What other ways can a country stimulate her economy without devaluing its currency?
The first thing is education. The government should invest in the people to enable them to acquire skills that will make them productive. Infrastructural development such as constant power supply, good roads, internet facilities, technology, etc, attract local and international investments. Political stability and good government policies are also important because investors will avoid conflict-prone nations. Any technologically advanced country will be able to make money from those that are backward.