I still hold some altcoins that I got from the bounty campaign in 2017 and the project is still active today. For this reason i still hold and believe that someday the altcoin season will come soon, giving me a large profit when it reaches the new ATH
You have very good optimism, but I recommend selling when it is still valuable because shitcoin cannot help you make a profit during this time. Most of the old projects have stopped working and made those coins lose value. I think instead of holding, you should spend some time researching some new coins because that's the only way to help you make a profit.