Diagnose a memory crash problem on Mysql 8 + Ubuntu 20.04

Job ID: 32780149

Budget: $10 – $30 USD

New databases, 3 new wordpress sites. 20.04.03 with Mysql 8.0.27.
My MySql8 is crashing on loop without specific errors and with enough memory. Increased the RAM to 2GB and 3GB Swap. Still the same.
Your job is to figure out why is this happining despite of having enough memory.
I have reinstalled LAMP from scratch several times and at the moment
Please avoid to advice "reinstall from scratch" that's not an option since I can do that myself so that's not the job. If you are interested in the job I'll save you some time. Here you have all my logs and testing: (contact me with codeword: lucino if you're reading this):
https://serverfault.com/questions/1091468/mysql-8-crashing-on-loop-without-specific-errors-and-with-enough-memory
This task is easy and plese only apply if you can start inmediatly. If you have experience with mysql8 and ubuntu 20, I'll give you access to my server and you'll just have to find the problem and let me know how to fix it.
Thanks for reading and bidding.
Related categories: PHP Linux Apache MySQL Ubuntu