Overcoming strong gravity from a big planet is just a matter of time.
If advanced aliens are real (and I believe they are), the reason we don't see them is because they don't want us to see them, at least not yet. If they discovered us, that means their technology is far superior than ours, and they can hide for as long as they want from us.
If you enjoy these subjects I recommend you to read Fermi Paradox and also check the movie from the 90s called Contact
Yes, you are right @dedicatedguy.
I will read about Fermi parada for sure and thankyou for stopping by🙂🙂