Have worked with well over 1,000 of them over the years. Can count the ones that are "pretty good" on two hands. Took 35 years until I moved from one hand.
Virtually every single resume is a paper of lies.
Yes H-1Bs from India fabricate their resumes and H-1Bs just lie about their abilities, my experience was the same as yours, way below average ability compared to any US graduate and below many admin’s ability on simple things like Excel, they also get their Indian buddies hired and make it extremely hard for any US citizen to get a job.