Hi @naveen_kumar,
There is only ConvLSTM2D layer 5 in Keras layers API 5 but you combine Conv1D 4 and LSTM 3 as these layers exists.
You can refer to the notebook that uses Conv1D 7 and LSTMs 5 to get an idea of how to combine them.
You will need to install TensorFlow (refer to the official guide 4) or import it directly in Colab Notebooks 2.