Minecraft 1.14+ does not open

I can't update my minecraft since the launcher update, but I can't open older version that I already played, if I delete my .minecraft, I can't download any version.
I already tried to download manually every single resource or anything else that the error screen send me the link, but it never stops.
I tried to download mt friend .minecraft (with 1.14+ working) and switching with mine, but it also did not work.