Let's put things in perspective a bit.
The last ice age ended about 10ka ago and at the height of this (20ka) the oceans were about 120m lower than now. About 125ka ago, the last warm period saw seas at around 5.5m higher than they are now. So, although much slower, this shows that certain factors have contributed to, and affected, the climate on a huge scale long before any human influence/activity could have altered much. Now, we are still in this continuing long-term warming period, which must also have some small effect, even now.
https://www.usgs.gov/media/images/coastline-eastern-us-changesslowly#:~:text=During the last ice age glaciers covered almost one-third,higher than they are now.
It is also well recorded that Bangkok is sinking, with subsidence after excessive ground water extraction, which will raise local flooding risk. And years of mangrove clearance has also made for more flooding but this is slowly being reversed now (I hope).
https://www.tcijthai.com/news/2015/08/english/5725