My colleagues don’t reply to my emails and text messages. It’s a work matter. . . . .

This mainly depends on whether the colleague is very busy at this time. If not, then it depends on his usual personality. If you didn't reply on purpose, then there is probably some friction between you and her, and it would be better to find out and resolve it in time. After all, we are colleagues and we still have a lot to communicate in the future. If he forgot to reply accidentally, it would be better if you remind him again.