I am still in version 1.10 + not access to my worlds

to make it simple. I'm on Xbox one. I was version 1.11 something in beta and my friends they were in 1.20 so when we join it we wrote impossible connection server obselète so I left on my worlds and I save in 1.11 (Beta) I told myself if I uninstall it and I rein staller it will put me in 1.20 as my friends and not because my set in 1.10 and my worlds are in 1.11 so I can no longer access to my worlds. Thank you for reading to the end.