They work often with strong buyers who do not mind paying a little more.We as listing agents often confront with investors wanting to low ball.

I've confronted some of these people and asked them to move their cars on several occasions, but there are too many to keep up.

I confronted them about this since the lease clearly states that no pets are allowed, and further calls for a fee of $50 per day, per animal.

I have been working in technology sales for 7 years, and for the next 6 months, my plan was to get my "feet wet" in real estate knowledge to make the jump in Feb 2020.Recently I lost my job, and I'm confronted with the question of finding work again in tech sales (which I'd prefer not to) or going all-in on real estate investing. 

A good Realtor will set expectations up front to minimize confrontation and tamp down the flames if they eventually erupt. 

Far more personal and less confrontational.

Confront them?

Please consider confronting the lender by asking why this request was made of your employer?

If someone answers the door I always politely, in a calm non-confrontational voice, let whoever answers the door know that I just recently purchased the property and I'm just trying to find out who's living there and have a talk.

When confronted with that reality, we have two choices.  1) use it as one of many excuses to give up and quit before even getting started. 2) buckle down and do the hard work necessary to achieve a very rewarding goal.