over heating problems never had until I did coolant flush myself need help

Verify that the correct coolant (antifreeze) was used and you have the proper mixture of distilled water. Typically 50/50 for almost all applications. Slight possibility you may have jarred something loose during the flush process blocking cooling ports? Thermostat could be hanging in the closed position? Is system building pressure when it's up to running temp? Few things to check..

I used Preston straight coolant with a gallon of distiled water from 7n eleven..

also before I did flush to my car I had put bars leak tablets on my radiator I put a whole in the actual radiator an crushed 1 up an put it in the water resivor. Took for a ride an well I was driving back home the temp future game started going past middle so waited for engine to cool then I flushed my coolant out an put new in

I dislike using those leak sealers. I never trust them as they sometimes do more harm than good in my experience. So you had a system leak before the flush?

no no leak at all I used them cause where I live has been really hot an I didint want my car to over heat on me so I put those in as protection.for it wont get hot

car ran good till I put those tablets in an did flush

I hate to give you bad news, but those tablets may be causing the issue. They are designed to find a leak and seal it. A straight system flush is always good PM for your vehicle, but adding the leak sealer is not typically done unless you're in a pinch (road trip) and have to get home. I would recommend another good system flush. If it's still overheating, there is probably ports blocked in the system. It may be garage time at that point.. :(