Tyre wear and taillight warning

[Ceejam]

Having just joined this forum, I am not sure if these issues have been discussed or not, but I am on my second set of front tyres that have worn on the inside! I have had the geometry checked and was told there is nothing I can do about it! But there must be something! Help!!! I also have an intermittent issue with my rear tail lights, the warning comes on but then goes off, especially if they haven’t been used for some time or it’s damp! Figure there is some water somewhere, just don’t know where to start! Any help would be most appreciated as I want to keep the old girl running well for a few more years!