Where to go after Meditation apps

I’ve gone through quite a few periods of meditation everyday, but usually something happens and I tend to off the rails stop for a long period to bad effects. I started learning with Headspace and went through all the Pro lessons and now I meditate without a timer or guide. I’m not really into the religious side of things (sorry if I’m posting in the wrong place.) I’m wondering if I am missing something that is preventing me from furthering my practice. I don’t know where to look or ask. I saw The Mind Illuminated being recommended but then later on being unrecommended due to controversy. I find it hard to trust anyone that says they are on any particular path these days.