I have never experienced this kind of thing before when trying to create any Bitcoin wallet or even an altcoin wallet. So I am just increasing from here just to be sure it's not an anomaly. Is it OK for a seed phrase to have repeated words?

In this case, the repeated word was "crime" when I was trying to create my first ever Ginger wallet.

There is nothing stopping a word to be repeated more than once. In a 24 word mnemonic, with 2048 possible words in the dictionary (BIP 39), there is a probability of at least one duplicate around 12.7% of the time (variation of the birthday paradox).