I have a realtor agent who has been good with showings. The problem that I discovered recently was he negotitates with me regarding the offer price. It has happened thrice in a row. I feel like all my energy is getting wasted in convincing my realtor to put an offer. Had he put an offer I would have known the outcome of my approach.

Following is an example of what happened in the last deal.

The seller's motivation was to upsize.
I offered with x amount and my agent came with a feedback saying that the other party would be interested only if I raise the offer by $20,000 more than what I have initially offered. I told my realtor to do any of the following.

I am fine with raising my offer value to x + $20,000 but I want something in return as my budget was x + $10,000. I asked my realtor to pick any of the following options as condition.

1. Boiler had to be replaced.

2. Shingles need to be changed.

3. Can bear my closing costs.

4. They can leave all the appliances along with dining table and chairs.

5. Since the heating was outdated I asked to get forced air AC + Heating with duct installed (This sounded unachievable to me as well)

To my surprise my agent argued with me saying that they would not accept any conditions and did not put an offer in the end.

Am I being unreasonable or should I change my realtor?