Speech problem

Speech problem I am 40 years old and job demands constant communication with colleagues and teams. I speak without issue but there are times where i get stuck. The word is at my throat but my tongue freezes. I many time pause and select an alternative word and need to say it fast. For example i start speaking fine and if there is a word like “ recognize “ or “adopt” i get stuck. Sometimes i even feel like my tongue is stuck while initiating a conversation; mostly during online meetings. English is not my native language but i have the same issue in my native language too. Any suggestions, idea what i am dealing with? How can i make improvements?