I can recommend eth, bnb as well as Polygon. Its true that eth has high fee issue but still its on trending, trustworthy & it has marketcap which is about 5x bigger than bnb! hope eth will find some way to resolve its all issues soon. Beside bnb is still growing & their team has confidence enough to give it a successful future. Probably you already hold bnb and Last one is matic (Polygon), Polygon Ecosystem is well structured & has lots of possibilities that will effect on it to have a bright future.
BNB continues to grow and if it makes a splash, it is indeed the right investment.
For ETH, I think there is still a long way to go.
The most important thing I can say for Polygon(MATIC) is that it will wait after BNB as heir to the throne.
I think ETH will be difficult to develop and better switch to more promising coins like MATIC, BNB or Solana, there's no denying that expensive transaction fees and steadily decreasing speed make a lot of devs. and the user transfers the asset to another project.