No, the Ukrainian army wasn't second-rate army like Iraq or Afghanistan's.
Russia is about #11 in the world. The only thing they have to sell is gas, wheat and some military hardware. The last time they produced a new item for manufacture was like 1973. So no they are not a threat to the United States.
Just because they have natural resources doesn’t mean they are competitively utilizing them except for gas. What armaments they are turning out are not superior to our technology. Our stuff doesn’t blow up on the test launch. Their navy could not stand up against us for 48 hours.
Reagan proved that Russia cannot compete with us without going broke. Trump is getting ready to defang China the same way.