when turning left only theres a knocking sound coming from the offside front

underside of the car. this knocking sound is more prevelant when turning

more sharply left and does not happen on wider left turns. this sound also occurs sometimes when braking,althought not as bad as when turning left.

ive looked underneath where the noise is coming from and there dosent seem to be any damage or anything loose.

gratefull for any help or advice