Are these spider mites??????

Looks like some sort of mold to me.
Try using some perlite in your soil for aeration........your soil looks like mud.
This is an old soil I got from my grandparents house awhile ago it said it has perlite in it but it is very old is this mold detrimental to the plants? And how do I fix this if I need to since it’s already in the pot and the plant has sprouted.
 
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