Just my 2 cents, as a beginner-intermediate in raids with a full time job, a family and other adult responsibilities. I have very little play time, perhaps 8 hours in a good week.
Pugging is a no-no because of all the waiting and drama that involves. I can’t get into the elite 500+LI groups either because I only have 61 LI at latest count.
The only sensible option is to join a raid group. Meet up on a regular basis, 2 hours twice a week, with like-minded people of about the same skill level. Start and finish on time. Do we clear every boss? No. But it is a good honest progression group and I’m learning a lot. I joke that it is my part time job with no pay, but I do enjoy and look forward to it.
I have run with training groups with much more skilled players 6/10 of the squad. We would one- or two- shot each boss and that was fun, but apart from that, I didn’t really learn the nuances of each fight because it was over so fast and we moved on to the next one.
Raids is really one of the few areas of this game that requires effort, perseverance and commitment. If it feels too easy as a beginner (edited), you’re probably being carried and people are just too nice to tell you.