Yes and no.
Go to r/DHExchange (Data Hoarder Exchange) and post: 3000 sound effect pack zip free download reddit work
“Looking for the 3000 SFX pack that was on Mega in 2023. Any working link?” Someone will almost always reply with a fresh mirror within 24 hours. Yes and no
Use the Reddit search filter: time: this year. Older links are often dead. “Looking for the 3000 SFX pack that was on Mega in 2023
The Internet Archive has several user-uploaded packs. Use this search:
"3000 sound effects" archive.org
These are slower to download but legally safer.