I would only invest long term in them because I believe that the opportunity for gain is far greater than the risk of loss in more of a long-term setting. It's a roller coaster of ups and downs in the short term. Just buy them and hold onto them for about 5-9 years (This is just my opinion because the algorithm that controls the supply is set to cut in half 3 times within the next 9 years)
Yes long term is always the best because of its opportunity since there is a halving event where it lessen the supply of bitcoin and help the price to be even more expensive than before. Buying a lot of bitcoin now is a good idea and not a loss because you can double or even triple that capital just after a few years of holding.