to stop trusting someone
потерять веру в кого-то (poteryat' veru v kogo-to)
"After what he did, I’ve completely lost faith in him."
"После того, что он сделал, я полностью потерял веру в него." (posle togo, chto on sdelal, ya polnost'yu poteryal veru v nego)
to make noticeable progress
to take credit for someone else’s idea or success
someone or something so good that it’s difficult to replace
to fail to experience something enjoyable
to have positive feelings about who you are or what you do
to show total indifference