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Poor Sound Quality on Laptop with Ubuntu 20.04

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I have Ubuntu 20.04 installed on a Dell Inspiron 15 3000 laptop. I get poor, tinny, blown-out sound quality at all volume levels whenever I try to play a video on Brave browser or whenever I play a video on Firefox other than on Youtube or whenever I play a downloaded webm or mp4 or such. Very occasionally those videos will play fine, but rarely. I can, however, get the audio to sound good if I play a youtube video, then switch to the other video I want to play and play it simultaneously with the youtube video. After I pause the youtube video, the other video plays with good sound until I pause it.

Fixes that I've tried so far from searching online that haven't worked include downloading PulseAudio to check if the configuration is correct. I believe it is. The only two options that work with my laptop speakers are Analog Stereo Duplex and Analog Stereo Output and both still produce the tinny sound. I also tinkered with the output levels to make sure it wasn't set too high.

I've also tried editing the config file on pulseaudio following this guide: https://askubuntu.com/questions/1108...-sound-quality It also didn't fix the problem. Any suggestions?

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I've also attempted to use PulseEffects to mess with the audio. It seems like the primary source of the tinny sound is from the bass, however PulseEffects doesn't seem to actually fix the sound quality but simply make it quieter. Laptop is Inspiron 3501 with RealtekALC3204 sound card.
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