Tablet touch stops responding suddenly.

Sorry for my lately answer. I also own a samsung t561 model tablet (tab E 9.6) and it works smooth,I mean,really smooth. Even It can finely run heavy games like Free Fire or PUBG lite type games.What the main problem I face is that my tablet frequently retarts all by itself, without showing any lag or something like that before restarting. The problem started almost 1 year ago, after 2-3 months of buying the tablet, I was enjoying a youtube video and the screen got stuck[It should be mentioned that I always turn on the "show touches option' from the developer option,So I noticed my scrolling touch response on the screen could also be seen when the device was stuck].I followed the restarting method using power button and volume buttons and the tablet restarted.After somedays, the tablet frequently started restarting automatically in every one or two hours.It became almost unusable. So, I used an app called ram cleaner and it slightly decreased the problem but did not remove it.The tablet is still very fast but the problem hasn't gone. I think its the problem of the management of ram or chipset. Again,the tablet didn't get any major software update. It is still running android 4.4.4. Forget about the specs, anyone would say that the tablet should have got a android 7 update for sure just by experiencing its performance. So, I think the problem might be in the sofware or cpu. Like see,many phones are seen to be super laggy, but they do not restart or get stuck. I think something is making the ram or the processor totally stop all the works, it can be a software bug or any motherboard ic failure,but what it is, it's ultimately causing this problem. Samsung should have given at least two years of software update for this tablet, I don't know why they forgot this model. I have seen few people who have solved this problem by downloading higher android version based custom rom.But there is a risk to brick this tablet. So,not everyone can use this method. SAMSUNG shouldn't have done this. if it was a product of apple, we could surely get a soution. @ahmedmarjanzia