The total combat losses of the enemy from 24.02.22 to 09.07.23 were approximately:
- personnel - about 234040 (+600) people were liquidated,
- tanks - 4078 (+4) units
- armored personnel carriers - 7964 (+11) units
- artillery systems - 4366 (+20) units,
- MLRS - 668 (+7) units,
- air defense systems / Anti-aircraft warfare systems - 413 (+3) units
- aircraft - 315 (+0) units
- helicopters - 309 (+0) units,
- UAV operational-tactical level - 3685 (+19),
- cruise missiles - 1271 (+0),
- ships / boats / warships / boats - 18 (+0) units,
- vehicles and fuel tanks - 6929 (+15) units,
- special equipment - 628 (+9).
Likely around 8k-10k in total. So they're likely over 50% attrition on their primary means of warfare.
And keep in mind this is artillery destroyed; they will also have lost a lot of artillery through wear&tear, and have used up artillery pieces as spares for other artillery pieces. Plus they still need sizable reserves for the defense of their massive country.
Russian military is moving towards complete ruin with the war in Ukraine.