Yes, I'm a noob and trying to make farms with help of youtube videos (tutorials). Also, my minecraft version and server version si 1.12.2. I play on a public mc server.
First off, I need help with a creeper farm which I got the design from . I have 8 spawning platforms and did the pillar thingies to help spiders not spawn, the gap between the platforms and wall is of 1 block (I think that may be the problem?) no platforms on the edge, connected to an item redstone clock. I tried several times to farm and from some hours I only got 40 gunpowder, and tried readjusting and doing things for it to work, I tried 3 different places to farm, the closest one to the farm worked best apparently (closest is at Y 63, second at 138, and third at 162) The y levels of the farm are: the magma block center which kills creepers at 6 and the wooden slab area on the top of the farm at 34.5. Tried farming with people online, didn't work well, tried farming without, kinda worked but still worked slow. I before used render distance 8 or 12 but now after reading from people I use 16-17 render distance.
Second off, I need help with a villager breeder, gave the villagers carrots and all that and all they do is stare at eachother and bump up and down, the collection system is ready, the "village" I have created, I used and no babies are coming out of the machine, the villagers don't even do hearts which is very infuriating cause I took the villagers from aproximatively 3000 blocks distance and tried extremely hard and the machine doesn't work.
The server I play on is play.terrorgames.ro (romanian server) and the average players are kinda 3-4 and in the mornings I'm usually alone, the survival version is 1.12.2. Hope I don't have that many grammar mistakes, I'm only 14 and my english is kinda off (I am a romanian).
Your pictures are a bit small but I'm pretty sure that the upper villager in your breeder is too low.
It looks like he has 2 blocks of space between his head and the blocks the doors are on?
In the video he only has 1 when the piston is extended.
And the guy making the video says that in earlier versions the villager had to have his head directly under the blocks, since the video tutorial is for 1.13 that means that you are playing on an earlier version so I think you need to raise the piston and villager up 2 blocks
For the creeper farm I think pictures of the spawning platforms could be useful for finding problems.
On a server I think the servers render distance is more important than your render distance.
Importantly, the changes in mob spawning mechanics between 1.12 and 1.13 changed the optimal position of the farm.
gnembon discusses the advantages and disadvantages of various positions for the farm in 1.12.2 at about 12 minutes into his video.
Mumbo Jumbo (who is playing here in 1.13) built it as low as possible to take advantage of the changes in mob spawning between versions.
The placement used by Mumbo Jumbo will not be the optimum for 1.12 unless you also light all the caves near the farm. All caves out to a distance of 128 blocks from your AFK point. [AFK point is the place one stands when the farm is
working, in case that term doesn't translate.]
"the gap between the platforms and wall is of 1 block"
This should not be be a problem.
gnembon's discussion of his creeper only farm – at ~36 minutes into his video – notes that 1 wide gaps are enough.
Not relevant to your questions, but your English (while not entirely fluent) is quite reasonable for an ESL-speaker. [ESL = English as a Second Language]
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WARNING: I have an extemely "grindy" playstyle; YMMV — if this doesn't seem fun to you, mine what you can from it & bin the rest.
The creeper farm is still working terribly, even though I lighted the caves up right now with the help of an admin, didn't get the chance to ask the server render distance though. Right now there are 8 people online so that may disturb the spawning, also, here is a photo of the spawning platform