•Can a single miner with enough resources (be able to claim the block reward) compared to farm network?
•What are the chances of a single miner against a farm?
You are right we can't consume the full knowledge of BTC in a few days, even if we can't consume full knowledge of anything in a few days. As everything takes time, but we do get some idea of the things we want to get knowledge of. And talking about your question. There is a chance to get a block reward, as in the past there were many solo miners who were able to get the block reward. The latest one I heard of is this -->
Source As you can see the power rate at that time were also huge but somehow this miner got lucky and you can also get lucky.
But talking about chances you have compared to farmers, I would say the chances are totally based on your luck, and if you have luck then chances are high but in general they are not very high. I suggest you to not to disheart and give it a shot if it worths for you as we should sometime follow our guts.