As Bybit uses Dual-Price mechanism, liquidations are triggered by the Mark Price. When your position triggers a liquidation, what it means is that all your margin used for the position will be lost, while the position will be closed at its Bankrupt Price.
There are two reasons why you can't find the closing price on the price chart after your position is liquidated:
1. Firstly, because the Mark Price is different from the Last Traded Price, hence, there will be scenario such as the Mark Price reaches the Liquidation Price and triggered the liquidation of your position, but the Last Traded Price of the exchange has not yet to reach the Liquidation Price. Thus, the closing price cannot be found on the Price Chart.
2. Secondly, because of the difference between the Liquidation Price and the Bankruptcy Price, when the Mark price triggered the liquidation, the position will be closed immediately. Therefore, the position will be closed before the price can reach the Bankruptcy Price. Hence, the closing price cannot be found on the Price Chart.