Now I am closely watching the process of collaboration between polygon, stellar and nws. I have high expectations for these coins. What do you think of this project? Could this significantly affect the price?
The only coin that I feel you could change it is Stellar. I don't think Stellar is worth enough to invest your money on. This coin has quite up and down few months ago and it's back with the dump this week.
The other two Polygon and NWS are really good choice especially Polygon because it could be a great competitor for other big coins out there.

Also, I would like to see your predictions for the altcoin market for October, which altcoin do you believe in and what fundamentals can drive growth?
Have been keeping my eye on Solana. I though this was just another shit coin from this hype train but my guess is wrong. They have been promoting their project to all services in the internet starting from streaming service, website etc. Solana could be your other choice to replace Stellar in your picks.