Sea level rise hasn't gone up too much and has not done so evenly over the globe. So you may be entirely correct that you are not noticing any difference at your place. If you've been there for 25 years then you will have only seen around 80mm of rise. And that is lost in tidal changes and the variability of weather at high tides. If you've been there for fifty years you are talking a change of 130mm in that time. With the uncertainties overall you can say around 100mm in a 60 year lifespan. And that still isn't obvious relative to the greater variability of a storm surge at high tide. We are at around a 200mm rise since 1900 and getting towards around 300mm since 1700. So that is affecting some vulnerable sea front property, but not most. https://climate.nasa.gov/vital-signs/sea-level/ https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_Chapter13_FINAL.pdf See Figs 13.7 and 13.27 in that IPCC report link
The greater problems start to arrive over the next eighty years as sea level rise is expected to accelerate. The around 100mm you may have seen at your place in a nominal 60 year period gets added to by a further 0.5m to 0.9m of further sea level rise by 2100, depending on what we do to minimise that rise, by reducing emissions (red and blue lines), and allowing for uncertainties (red and blue shading). Again, Fig 13.27 from the IPCC report:
