Problems starting car/sometimes engine shakes

Due to the complexity's of today's vehicles, the vast majority of owners or DIYer's do not possess the proper diagnostic equipment nor the knowledge and technical training that's required to effectively and successfully perform their 'own' automobile diagnostic troubleshooting and repairs.. Unfortunately, It is impossible for us here - 'online' - to determine what the actual failures are .. We could post a 'list' of the possibilities - however that isn't going to help due to the fact the same diagnostic 'testing' equipment and troubleshooting knowledge is still going to be required before a logical repair strategy can be obtained. Therefore, it is highly recommended to seek professional *hands-on* assistance with this issue as that tends to be the most cost effective and reliable solution.. Good luck! Recommended: Below is a link to local auto repair facilities (in your zip code) ▪️ https://repairpal.com/repair-shops ▪️

Besides the accurate information from Pushrod, it appears you have more engine performance problems rather than a starting system issue. If you continue to try and start the vehicle, it may cause damage to the starter motor also, which seems to have maybe happened. A shaking motor is evidence of an engine performance issue that needs troubleshooting performed.