It is possible to create a guild from VIP 6 level. Without being in a guild, you cannot participate in the Guild Boss (available between 12:00 and 18:59 every day).
In order to be able to make donations, you will need to make guild dungeons.
In these dungeons, you will also earn contributions and items for the eight gates to increase your stats (Attack, Speed, Defense, HP, Dodge, Crit, Hit, Res).
Here the link to the discord: https://discord.gg/cZNdapx