Of the mentioned projects, I think Cardano and Tron are the most solid, with great potential, where one can invest in the long term.

Forget Dogecoin, here are 7 tokens for less than $0.50 to buy right now!!!!
Dogecoin falls 4.5% in June 2025, reinforcing its long-standing trend as the worst-performing month for the memecoin.
In the cryptocurrency market, few tokens have achieved as much notoriety as Dogecoin. Dogecoin not only created an entire genre of memecoins but also led the sector for a time.
However, history has repeatedly shown that the hype surrounding legacy does not guarantee sustainability. June 2025 brought another bearish turn for Dogecoin, and the numbers speak for themselves.