The strategy for the Donald J Trump Campaign was to spread as much disinformation as possible and rile up the base while saying the election was "rigged" except in each of the 59 lawsuits they have lost, in the actual court filings they admit there was no "rigging" or "fraud", but there were irregularities. Then each judge ruled with a scathing rebuttal but no matter, the point is to file numerous lawsuits without merit.
Why? To raise money. To pay debt. To prepare for the coming legal problems Donald J Trump will face