Seems like a bad strategy?

disclaimer i oppose russian invade ukraine, but if i were putin...

1, Russia started with around 3,000 operational battle tanks, beside around 9000 in storage.

2, russia lost "half of their modern tanks" but could send old ones.

3, wouldn't strategy be better? to use the thousand old tanks, made between 1983 and 1991, considering now has a use in war, so better than just sitting. and can risk because "old minor loss", maybe they will accomplish before getting destroyed and if destroyed they were the old ones, 30-40 years old.

4, Russia did use and lose nearly 200 old t62 and t64, but i mean newer 1983. and did use and lose nearly 500 old t72, but have hundreds more to use? rather than just sitting in storage like a millionaire "i have so many" now is war use them?

5, similarly the thousand ones produced from 1991 to 2003 also old so loss is "minor" because it is the old ones, should risk for use? seems dumb to store them instead of use them during war?

Seems like a bad strategy?
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