I see you talk a lot about transaction fee of 1sat/byte. Is there a possibility of transaction to stuck or get lost?
For example if I send 1 bitcoin with transaction fee of 1sat/byte is there an opportunity for me to lost it for ever? Or it will take hour/day/month/year to get it transferred, but in the end the receiver will get it?
Nope. Worst case scenario is that it won't get picked up and processed by a miner. It will return to your wallet. I can't quite remember but I think that'll take 10-14 days.
Even with fees as they are it's quite possible someone will process it during that time. There would be many peaks and troughs during a couple of weeks.