Get a blocklist and set it up.

Literally all of the IPs are known bots for up to 3 years:

• https://www.abuseipdb.com/check/134.19.178.167
• https://www.abuseipdb.com/check/213.152.162.5
• https://www.abuseipdb.com/check/134.19.179.211

Oh and maybe also a rate-limiter...