Which Ad-mediation is the best to use for Games developed using Unity

I am an Indie Game developer.Initially had google-admob which was serving google ads. But unfortunately for even no mistake of mine ,intentionally atleast, my google adsense account was closed.I was honestly heart broken and appealed twice with whatever proofs I had, but google didn't even care to listen.

I learnt a lesson that not to put all your eggs in one basket. So I have decided to use ad-mediation. But majority of them are biased ,in the sense they prefer their ad-networks.

I saw Appodeal, but for that my admob ad-ID ,banner ads and Interstitial ads it requires ,but it is gone. I am scared to use my banned admob id as it may cause problem.Also many adnetworks are temporarily closed many times.

I saw another admediation plugin called Gley. But Gley cost 20$ and besides that admediation in that is no based on the bidding, but rather an order or percentage set by you.

They was another thing called Epom Apps, but they are currently unoperational because their office is in Kiev and the war situation has impacted them.

I really am searching so much but not getting a proper answer

So which admediation is actually good and preferably free? I saw Unity ad-mediation in beta , but will that also be biased because Unity ads are there right? Will it work properly if I don't integrate Unity ads in it?

Or atleast Game developers here can share their story of how they are able to monetise their games via mediation