Sr20 won't start

[Alex_s14.5]

I need help I bought this car with the sr already swapped drove it around for a couple of days then battery and brake light turned on found out was alternator so I got it repaired but then car wouldn't start, found out the plug of the starter some how got disconnected I connected and started right up checked my alternator and was charging in the 12s so I took it back to get it repaired and car started fine after but after like two days it wouldn't start so I got new battery thinking battery wasn't holding charging but still doesn't start and everything is connected and new battery and brake light and battery light still on but I would think it should at least turn on

It's my daily driver I need it to go to school and work any help thanks in advance