There is this unknown miner 19dENFt4wVwos6xtgwStA6n8bbA57WCS58 keep getting all the new blocks in the last 24h it must of got 80% of the blocks

how is this possible it can’t be just hash power surely.
Where did you get that 80% from? sorry but it makes no sense, looking at the coinbase of blocks which belong to that address you can see
-,_b/Foundry USA Pool #dropgold/ k
So, clear as day that this address is owned by "Foundry USA Pool", now that we got that out of the way, let's examine the 80% you mentioned.
In the last 30 days, Foundry pool found 822 blocks, which is exactly 19% of the total 4,331 blocks the whole network found, so it's pretty safe to assume that they own on average 19% of all the hashrate.
Looking at today's results, Foundry found 27 blocks, which is 22% out of the 123 blocks the network found, that is 22%, which isn't far from the average 19%, it could be a bit of luck + more gears added to that pool, nothing unusual is happening here as far as I can see.
Must be a large lucky mining pool.
They have been the largest mining pool on planet earth for months.