ishare ibond question

if i buy ishare ibond

https://www.ishares.com/us/strategies/bond-etfs/build-better-bond-ladders

then bond price drop like 2022 but i hold ibond to maturity will i loss effect? will interest rate change if bond price drop but i hold ibond to maturity?

because i read in this https://www.ishares.com/us/products/308567/ishares-ibonds-2025-term-high-yield-and-income-etf the blackrock at maturity will liquidity ibond at their current nav? but why liquidity sell at loss ? should ibond return it face value at maturity ?