Blocks aren't breaking, lag/delay on single-player on Switch

So on the Minecraft for the Nintendo Switch whenever you break a block or place one (includes non- blocks like torches) there is always a delay about 4-8 seconds till it's broken or placed on screen on single-player and at times it will also go back about 10 seconds like say I enter a house and it starts lagging forcing me to go back outside before entering which is really annoying.
Link of my video (since I can't post videos here)
https://youtu.be/S0PXoYBUPVE