It rarely happens to me, but sometimes. Mainly when there are a number of people competing for attention, and I don't get it because someone else does.
I suggest if you feel you are being ignored, you ask the people why no one is responding, or perhaps it would be better to take one of them aside and ask privately, "When I said ______, why did you not respond?"
The answers might be informative. You may find you inadvertently spoke about something which was a "sore subject." Or you might find that people did not think your comment needed a reply. Anyway, asking for input from others is a good social skill to develop, and the first step to getting along better in groups.
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A finger in every pie.