help my phone will do random screen jumping and weird auto correct

my phone will do random line jumping ex.

hello how are you but it comes out as

heyou hoarehowllo ( exaggerated but true)

also i will be typing and i will say hello but if i get it wrong like hgllo then i delete it to try again and then i say hello but it says hhgllohello making texing very awkward please someone help

also this came right after the update by tmobile >:(