getting father's rights revoked???

my son's father has barely been around since he was born in February.. he says he wants to do better, but then doesn't actually do it... ive gotten "im sorry, he deserves better" MULTIPLE TIMES but he's never actually BEEN A BETTER FATHER.... he could care less about our son, meanwhile he's playing daddy to his new girlfriend's son.. he'll sit there and say he wants to see him, but never follow through with the plans.. instead, he'll completely ignore me.. the beginning of this month was going to be the start of him going to his dad's every other weekend and he hasn't taken him a single time... i read that they're unlikely to relinquish his rights because so many people try to just to get out of paying child support but i don't want someone just coming in and out of my son's life whenever they please...

below is another instance that happened.. he is supposed to be working 7-3 everyday and picking up his oldest son, who is 4, from daycare everyday. recently, he's been off work A LOT during the day.. and ive asked him if he was still working and he claims to be.. but in this message, he was supposed to get him and i asked if he could get him sooner because i was wanting to go into work earlier that day, and he told me he was "still at work" after the message before telling me that his son had his phone.. he works in a warehouse and kids arent even allowed in there..

UPDATE: i texted him one last time, trying to be nice, trying to give him the benefit of the doubt, and he just doesnt care ☹️