I had an extra panel of that sound proofing foam lying around, and that works great! I think it was this one: https://www.amazon.com/Siless-pack-Acoustic-Panels-Soundproof/dp/B082QK7B8N/ref=psdc_11975721_t3_B076JNCQ39
You could try these, though they're meant for small rooms mostly, and probably won't help as much against vibrations and loud music
Please for the love of god (or whatever you worship), improve the sound in the room with a few of these.