Update 1.16 came with some bugs.

So ever since the new 1.16 update my Minecraft has been a bit weird. So before the update I could play offline and just not be signed into my account. But now I can only be offline if I go from online to off line while playing in a world. But if I leave the world and close Minecraft  I can't play anymore. every time I click on Minecraft it just shuts down. I also made sure it was not my iPad's that was making this happen. Also my worlds have been extra laggy since the update. If you could have these things fixed that would be great.