How to Change Huawei Watch Fit 1, 2, SE strap without any tools that may harm your watch fit

Hello everyone.
I owned Huawei Watch Fit and would like to change strap.
I went through youtube and found that all of the clips advice by using tools to remove holding black plastic. Sharp tool may cause cosmetic wear on that part.
Here is how to easily remove strap and replace a new one.
Feel free to comment and asking question if any