my minecraft is not loading

My username is ResidualFern361 and before I got the nintendo online memeber ship on my minecraft it loaded quickly, but then my switch for some reason made my minecraft slower  so I had to wait 10-15 minutes for my switch to load in but now it won't load at all I recently updated it, and ever since every time I try to load minecraft, it says the software closed because of an error and I've tryed rebooting and deleting my minecraft, and I've try to resolve it for weeks. I tryed to completly  get rid of my minecraft but nothing is working. 

And if you can I got minecraft duengons with my family and sometimes our stuff disapears, before we go to bed we save our progress, then close the software we checked for corrupted data but nothing, 

 

Can you please help? 

Thank you