I hate to disillusion you , but you (an many others) have been duped/scammed/hoodwinked.
Before Trump came in and abolished it, Obama's immigration policy was "Catch & Release".
So what they did was issue summonses to illegal aliens to appear in court (which went into the wastebasket 2 seconds after walking out the door).
Illegals of course, ignored the summones, and simply melted back into the US population (as they again do now every day, under Biden). Neither Obama nor Biden deported ANYBODY.
All they did was count/define every summons as a "deportation", fed that to the leftwing media, and got millions of people duped into believing they were deporting people.
For 4 years Biden did everything he could to BRING IN illegal aliens, not sen them away. To him, they represented precious VOTES.