Audio problem: it says "dummy output" and i can't hear anything

audio works only with bluetooth devices, neither if i connect something with aux it's been recognized.I tried opening alsamixerbut it says this

ALSA lib confmisc.c:855:(parse_card) cannot find card '0'ALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_card_inum returned error: File o directory non esistenteALSA lib confmisc.c:422:(snd_func_concat) error evaluating stringsALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_concat returned error: File o directory non esistenteALSA lib confmisc.c:1334:(snd_func_refer) error evaluating nameALSA lib conf.c:5178:(_snd_config_evaluate) function snd_func_refer returned error: File o directory non esistenteALSA lib conf.c:5701:(snd_config_expand) Evaluate error: File o directory non esistenteALSA lib control.c:1528:(snd_ctl_open_noupdate) Invalid CTL defaultimpossibile aprire il mixer: File o directory non esistente

so I can't modify anything.doing cat /proc/asound/cards it says no soundcardbut if I run lspci | grep -i audio, it says:

0000:00:1f.3 Multimedia audio controller: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 20)

running this aplay /usr/share/sounds/alsa/Front_Center.wavthe terminal says that it's playing but I can't hear anything (i can only if I repeat the process connected to a Bluetooth device)if I run pulseaudio, it says:

E: [pulseaudio] pid.c: Daemon already running.E: [pulseaudio] main.c: pa_pid_file_create() non riuscita.

I tried a couple of things I found online but nothing worked please help I'm a newbie!