And a year ago I cleaned my wallets. All that I could, I transferred to Forkdelt. But much remains. It took a lot of time and had to spend Ether on gas.
It is probably easier to create a new wallet and transfer only the necessary assets to it.
Yes, you are correct. The best solution is to create a new wallet and start afresh. Most of the coins created in 2019/2018 has either died off, delisted or scam exited. My former imtoken wallet is a now a mess. The only coin I managed to get out of there before its crash was Hydro. Nowadays I don't participate in. ICOs but IEO and when I do, I ensure I sell before others do. Its now like a sack race