Need to clarify one thing regarding ETH 2.0 will 2.0 network be 100% PoS or it will be a hybrid model in which both PoW and PoS will both work together? Sorry but I don't have much technical knowledge.
Ethereum 2.0 must work on the POS algorithm.
But phase 0 and phase 1 will be hybrid. In phase 1, the reward for miners should be reduced, and in phase 2, the network will refuse miner services and completely switch to the POS algorithm.
(This is very brief and in general terms, in practice there may be intermediate phases and other decisions, which will depend on the circumstances)