I need a family lawyer

Modify a never enforced child support order (because I ended up taking care of the child more than 70% of the time due her full time and sometimes month long work travel, and the loss of my job during the stressful week of her pushing dozens of late modifications to the agreement and forcing me into another mental breakdown. I am retired now and she just used the inaccurate never enforced order based on incorrect incomes to garnish my SS retirement, despite her already collecting more than the original order from my child's SS benefit based on my retirement. She makes over $170K/year, and I have only my $2300, now $1400 monthly SS retirement and dwindling IRA savings to support my new family in Indonesia, where I retired to have any hope of a decent golden age. This seems like a gross misrepresentation that could be corrected by an appeal for revocation of the original order, which was based on a misrepresented situation that changed during the week she pushed me to finalize while I was in the middle of a mental collapse that put me in a hospital for several weeks, cost me my job, and left me on strong meds and therapy while trying to get disability for a year and a half while again being the stay at home parent for our daughter till my ex moved to take a new job in NYC with mine or the court's permission, as she was required to do. She had also no complied with the court's order for reasonable coparenting time. There are other damaging things about her disregard for federal immigration and citizenship laws in obtaining US citizenship illegally and maintaining illegal dual citizenship with China, if we need to play hard ball. Thanks. I know your estimate will be more of a ballpark range and assessment of likely outcomes.