The only way to bring about meaningful change is to vote for the largest opposition party, in this case the DA.
Every vote spoilt is automatically a vote for the government, as it takes away from the potential to show the government that the people are tired of their corruption, inability to curb violent crimes, empty promises, looting the state coffers, bleeding the people dry and inability to govern as they should.
Parties like the FF+ are worthless, as they yearn for days long gone to never return.
The ACDP, Agang and others are also minorities, that have a little bark but no effective bite.
The EFF is a militant gang parading as a political party, that will in all likelihood add their votes to those of the governing party as soon as they are promised the sun and moon again. Perhaps their leader will receive immunity from further prosecution.
Think with your head, not your heart, and vote to bring about change.