If your HiFi amplifier has a phono preamplifier built in it will have a dedicated input on the rear labelled "Phono". Sometimes this is switchable via a toggle on the rear of your amplifier or via a software menu on the amplifier display & may need to be enabled to have effect. On some HiFi amplifiers the Phono input may have been an optional extra in which case there could be a label but no sockets. If there is no Phono PreAmplifier on your HiFi amplifier you will either need an external unit or a turntable with a built in PreAmplifier.
Modern media speakers designed for streaming can also be connected to a turntable if they have an Aux input. To do this you will need either an external Phono PreAmplifier or a turntable with a PreAmplifier built in.