I think ADA is a very potential and quality Altcoin so you should invest in it. According to many investors, ADA is able to compete with Ripple in the future. Holding it for a long-term is the right thing.
Thats ADA before but now i think they are on the risk of not growing. This can be a good coin in the future if theres an increase on demand if theres none then better to invest on BNB a better option aside from ADA. Theres so many active altcoins in the market, try to invest on them and dont hold in active coins.