They've been generously donated quite a few from Russia. Over 550 abandoned and captured tanks to date.
https://www.oryxspioenkop.com/2022/02/attack-on-europe-documenting-equipment.html
Captured includes approx 87x T-72B, 145x T-72B3s 138x T80s and 13x T90s. Excludes abandoned, and captured but damaged.
Agree with the sentiment though. The West should be doing everything it can in terms of supply and weaponry. Russia is on the back foot and this is the best opportunity to clear them out.
ISW on August 14 reported
https://www.understandingwar.org/backgrounder/russian-offensive-campaign-assessment-august-14
Russian military leadership has likely rushed a mix of forces to this area to defend it against an expected Ukrainian counteroffensive, which likely explains the wide variety of force groupings in this area. ISW has observed elements of the 35th and 36th Combined Arms Armies (CAA) of the Eastern Military District (EMD), the 22nd Army Corps of the Black Sea Fleet, the 49th CAA of the Southern Military District (SMD), 76th Guards Air Assault Division, and Rosgvardia throughout Southern Ukraine.
To defeat all that was some achievement...it depends how much of it remains intact.