Tarkov is an extremely fun game that I believe pushes a lot of new players away. I struggled online trying to learn maps and complete quests. This can be especially hard if you don't have friends who understand the game, to begin with. Now don't get me wrong I love playing Tarkov online but it can be really frustrating as I don't have the full knowledge that other plays have from playing so long. I found the offline mode to be frustrating because it was still hard to test guns and learn how to use them. Modding was also difficult because I couldn't access the flea, and my traders were at such a low level. That's when I discovered Escape from Tarkov Single player.
This mod requires you to own Tarkov from the official developers. They do not support people pirating the game. You can find the tutorial that I used to get this set up right here. Please note while I have not seen evidence of the developers banning players for using this it is technically against terms. They could ban you so please do this at your own risk.