Problems with minerd, bitcoin core, inactive pools

I've been struggling a lot trying to figure this out, but I still haven't gotten to the bottom of it. I have a few questions and could really use your help. This is my first time diving into blockchain stuff. It’s all about hashing different block candidates until I get results that are smaller than VERGE, right? So, I got a couple of friends to let me use their machines to mine using CPU and BITCOIN CORE. I looked up some guides on how to mine easily with BITCOIN CORE from various popular sites. Before we kicked things off, I thought I’d leverage my decent knowledge about BLOCK CHAINS and NODES. I searched for the software's SOURCE CODE at this link https://sourceforge.net/projects/cpuminer/files/ . Also checked out the PRECOMPILED BINARY here https://github.com/pooler/cpuminer. After firing up core version 0.21.0, we hit a SYNTAX issue: setgenerate [code<true|false> <number of cores to be used>/code]. We opted for a LINUX system because of some earlier troubles and SLOWNESS. Turned out GETHASHESPERSEC wasn’t optimized. We downloaded and unpacked the software, then CONFIGURED it. It was a little tricky, honestly. When we tried navigating to the CPUMINER DIRECTORY, we found a FILE called "MINERD". After running the commands, this is what we ended up with: https://ibb.co/KNjVgcS. So, 4-core CPUs should manage around 5400 Kilo hashes per sec (kh/s) for each CORE. But we couldn’t connect to the MULTIPOOL. So here are my questions: Can anyone tell me why we couldn’t connect to the MULTIPOOL? Did we mess something up?

Please, read this post, it's the first and only sticky in the mining subforum, which would also have been the right place for this topic. https://bitcointalk.org/index.php?topic=2415854.0 You can't mine on CPU anymore.

Please can someone out there get me through this complications? Am stuck!!

Sorry, can't you read the very first message in the thread I linked to you earlier? The general forum for mining Bitcoin (since you mentioned Bitcoin Core) is this: Bitcoin Forum > Bitcoin > Mining Now, I see you moved your topic to the Altcoin mining section. There are altcoins that you can easily mine with just a CPU, but that's not mining Bitcoin, even if they pay you out in BTC. If you want to mine altcoins, have a look at Monero (XMR) mining. A pool that I know is legit and friendly is https://www.supportxmr.com/, they have instructions on how to set everything up.

With most coin wallets you can always CPU solo mine but you can’t do it with Bitcoin core because the developers removed that option years and years ago when people have long stopped CPU or GPU mining with the Bitcoin core wallet. So this is why it doesn’t work. Try another alt coin and it might have that solo mining feature still included. But read what everybody wrote here. CPU mining Bitcoin was what you did back in 2009-2010 and then in 2011 you could GPU mine and then in 2012 you could only using ASICS and wasn’t worth the effort anymore. It’s a waste of energy you won’t find any blocks.

Am not mining altcoin I followed the link and am still having it very slow to connect to a pool

Please ,make this elaborate Is it the reason why i can't reconnect to a pool? Even with a LINUX system and the gethashespecsec optimisation... How then do MINERS mine succefully?

They don't use CPU mining. A standard 3300W 100TH/s miner is about 3000000 times faster than CPU mining and still only has a 1 in 9444 chance of finding a block in a day.

As n0nce said, read the pinned topic at top of this area, mainly point-3.  Because BTC difficulty is so high using CPU/GPU to mine it is virtually impossible. Because of that fact CPU/GPU mining code was removed from Core long ago. Without the mining code you cannot connect to any BTC pool.